IB track record · Google reviews since 2020 · named, documented results
IB Math & Physics Exam Results: Public Google Reviews since 2020 and Documented Cases, Every Source Named
Public reviews verifiable on Google since 2020 · Teaching IB since 2016
No cohort averages, no percentages you can’t check: this page is built from what anyone can audit. 9 of the 14 outcomes below are in students’ own Google reviews, dated by Google and open to you today; the other 5 rest on documents I hold on file, and each one says so. Ten years of teaching means far more students than this page names. These are the ones I can prove.
In brief
Renzo Diaz, a private IB Math and Physics tutor teaching IB since 2016, with public Google reviews since 2020 (one-to-one, online worldwide, based in Italy), has IB results on record across IB Mathematics and IB Physics, at Standard Level (SL) and Higher Level (HL). He teaches the IB Diploma Programme (IB DP) courses IB Mathematics: Analysis and Approaches (AA) and Applications and Interpretation (AI), and IB Physics, and he teaches every lesson himself, in English or Spanish.
Among Renzo Diaz’s IB results on record: a final 7 in IB Physics SL (May 2025, from a 3, in the first exam session of the new IB Physics guide), 7 in both IB Math AI SL exam papers (May 2024, from a 3), a final 6 in IB Math AI HL (May 2025, from a 4), and the final grades students state in their own Google reviews — a 7 in IB Physics SL, a 6 in IB Mathematics and a 5 in IB Maths HL.
Two students are named, with their schools: Blake Eustaquio (Metropolitan School of Panama, Panama) and Aline Pascarelli (British School of Milan, Italy), each with a document held on file and their own public Google review. He names a student only with their agreement and the document in hand; every other outcome stays anonymous and keeps its source and its date — a student’s own Google review, or a dated message from a school, a teacher or a parent, held on file. Lessons with him start with a free 45-minute strategy call.
Key takeaways
14 outcomes on record: 9 you can audit yourself on Google today, 5 more on documents held on file, each with its source.
From a 3 to a final 7 in IB Physics SL:the top IB grade, in the very first exam session of the new guide, May 2025.
7 and 7 in the IB Math AI SL exam papers, from a 3: the top grade in every IB Math AI SL exam she sat — the two papers, 80% of the grade, decided in the exam hall, where tutoring shows. May 2024.
Every documented IB result is a 6 or a 7. With the final grades students state in their own reviews, five final IB grades are on record, and four of them are a 6 or a 7.
7 years in a row with a public Google review: 4.9 / 5 from 19 reviews, as of October 2026.
Five final subject grades from three students: two 7s, two 6s and a 5. Three are stated in public reviews; two are confirmed in writing and held on file.
Grades gained, the largest change to a final grade
Seven consecutive years on the Google record, from 23 June 2020 to 8 July 2026, each review dated by Google and verifiable on the Business Profile.
7 is the highest grade the IB awards. Every IB grade from the documented cases and the public reviews is open data (CC BY 4.0): download it as JSON or CSV and check the numbers yourself.
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The public grade audit
IB Math & Physics: every IB grade on record, with its source
Every result and outcome on record, grouped by what stands behind it: documents I hold on file first, then what students state in their public Google reviews, then my private teaching files. In every table Mathematics comes first, and the newest entry leads each subject.
Why so few names?
I name a student only when they’ve said yes and I hold the document. Everyone else stays anonymous, but their outcome keeps its source and its date. That rule is behind every line on this page.
The final grade as the student states it in a public Google review, cited by the date Google shows; the country and the exam session come from my own records.
A school test, a trimester grade or school awards, from private records dated 2022 and 2023: a school’s notice, a teacher’s email and parents’ messages. Quoted word for word and anonymised; the records themselves are not published.
Of the 19 public reviews, 2 are the documented cases, 2 state final IB grades, 5 describe another outcome, 6 describe the course, and 4 are a general comment or a star rating. All 19 are quoted, by date, in the review audit below. Level 1 pairs a document held on file with the student’s own public review. Levels 2 to 4 are reviews verifiable on Google, each by the date Google shows.
Level 1
Documented cases: IB results backed by documents held on file
Two students, named with their schools, both taught online, one-to-one, for two years. Each result is transcribed from an IB Results Summary or a written confirmation held on file; each starting grade comes from the student’s own public Google review.
Documented IB results: Mathematics first, newest first within each subject
Documented IB results: Mathematics first, newest first within each subject
Aline’s result is her two exam-paper grades, the externally assessed exams that make up 80% of the assessment. Blake’s school predicted a 7 in both subjects; the table shows his final grades.
How far did each documented result move from its starting grade?
The documented cases, each over two IB DP years: starting grades from the students’ public Google reviews; results from Blake’s written confirmation and Aline’s IB Results Summary, held on file.
IB course, and what was measured
Start
Result
Gain
IB Math AI HLFinal IB grade, May 2025Start: his public Google review, 6 August 2025. Final grade: his written confirmation, held on file.
4
6
+2
IB Math AI SLIB final exam papers (Paper 1 and Paper 2), May 2024Start and result: her public Google review, 17 July 2024. The exam-paper grades are also in her IB Results Summary, held on file.
3
7
+4
IB Physics SLFinal IB grade, May 2025Start: his public Google review, 6 August 2025. Final grade: his written confirmation, held on file.
3
7
+4
Level 2
Final IB grades stated in public Google reviews
Two more students state their final IB grades in their own public Google reviews. Each row cites the review by the date Google shows, where it can be read in full, with the student’s country and exam session from my own records; never the school.
Final IB grades in public Google reviews: Mathematics first, newest first within each subject
Final IB grades in public Google reviews: Mathematics first, newest first within each subject
Student
Country
IB course
Session
Final grade, as stated
In the review’s words
Format · duration
IB Student · MathematicsGoogle review,
Italy
IB Mathematics, variant and level not stated
May 2023
Final IB grade 6
For 2 years Renzo helped me with IB maths, he single handedly taught me the whole IB syllabus guiding me through the course where I finally got a 6 in the final exam.
Two years, the whole IB syllabus
IB Student · Mathematics & PhysicsGoogle review,
Bulgaria
IB Mathematics HL
May 2022
Final IB grade 5, one mark from a 6
Renzo managed to help me navigate through these issues and achieve what I wanted, managing to get a 7 in Physics as well as a 5 in Maths, having been only one mark away from a 6.
One or two lessons a week
IB Student · Mathematics & PhysicsGoogle review,
Bulgaria
IB Physics SL
May 2022
Final IB grade 7
I prepared with Renzo for both my Physics SL and Maths HL IB exams. … managing to get a 7 in Physics
The two rows dated 16 July 2022 come from one student, who states both final grades in one review.
Every documented IB result is a 6 or a 7; with the grades students state in their own reviews, the five final IB grades on record include four at a 6 or a 7. Predicted grades never count: only the grades the IB awarded.
Level 3
Other outcomes described in public Google reviews, without a grade
Five reviews describe an outcome without stating a grade: a Diploma completed, goals reached, better grades at school and at university.
Outcomes in public Google reviews: Mathematics first, newest first within each subject
Outcomes in public Google reviews: Mathematics first, newest first within each subject
Student
Outcome reported
In the review’s words
IB Student · MathematicsGoogle review,
Academic goals reached, after four years
I’ve had the privilege of working with Renzo as my math tutor for the past four years, and I can confidently say he’s been instrumental in helping me achieve my academic goals.
IB Student · MathematicsGoogle review,
From a low starting level to every goal set, in the final school year
Sono partita da un livello basso e grazie a lui sono riuscita a raggiungere tutti i miei obbiettivi. I grandi miglioramenti che ho fatto in un solo anno sono tutti grazie alla sua organizzazione e pazienza.
IB Student · Physics & MathematicsGoogle review,
Diploma and results received after the two-year course; going on to study applied physics, with lessons continuing at university
Having recently received my diploma and results, I am very proud of what we have accomplished. I will soon be going off to university to study applied physics, and have coordinated with Renzo to continue our lessons throughout my degree.
IB StudentGoogle review,
Very good grades at school, then at university
I do repetitions with Renzo since a few years, as he is very good in teaching and I seem to take very good grades both in high school and now at university.
IB StudentGoogle review,
Better understanding of the subject and better school grades
I tried multiple tutors before Renzo but I never got the results and improvement in my understanding of the subject and school grades as I did with him.
Courses and context described in public Google reviews
Six more reviews state no outcome but say what was studied and how: the course, the level, the way of working.
Courses and context in public Google reviews: Mathematics first, newest first within each subject
Courses and context in public Google reviews: Mathematics first, newest first within each subject
Student
What the review describes
In the review’s words
IB Student · MathematicsGoogle review,
Practice papers, then the wrong answers worked through together; concepts explained on the spot
To use him to the max i recommend doing practice papers and working with him on those you got wrong but he can also do lessons where he explains the concepts and you do the questions in the lesson.
IB Student · MathematicsGoogle review,
A difficult course and earlier gaps, explained with patience
Dalla mia esperienza vi posso consigliare Renzo come tutor, mi ha aiutato molto con matematica corso che mi è difficile anche perché avevo delle lacune.
IB Student · Physics HLGoogle review,
Several years: IGCSE Mathematics first, then IB Physics HL
I’ve been working with Renzo for the past years. Firstly helping me with IGCSE maths and later with IB Physics HL.
IB Student · PhysicsGoogle review,
Preparation for the IB Physics exam
Combine that with a sense of humor and knowledge surrounding IB physics, and you have Renzo. I wouldn’t know half the stuff that was on the exam if not for his help.
IB Student · Mathematics & PhysicsGoogle review,
Complex concepts in both subjects made understandable
Mr. Renzo is a highly effective teacher who excels in teaching both math and physics. He is skilled at explaining complex concepts in a way that his students can easily understand.
IB StudentGoogle review,
The concepts, and the technique for exam questions
Highly recommend as a tutor for IB, he helped understand the concepts and exam question techniques!
IB Math & Physics results from a 3 to a 7, the highest grade the IB awards: the two named cases, document by document
IB Physics · Documented case
IB Physics SL — from a 3 to a final 7, May 2025
Blake Eustaquio went from a 3 to a final 7 in IB Physics SL, the highest grade the IB awards, in May 2025: the very first exam session of the new IB Physics guide, before a single past paper in the new format existed. In the same session he took IB Math AI HL from a 4 to a final 6, after two years of online lessons with me.
Context — the new Physics guide and his weekly routine
The new IB Physics guide, first examined in May 2025: five themes, Paper 1 in two parts (1A multiple choice, 1B data-based questions) and Paper 2. I teach both levels, SL and HL, including the scientific investigation.
In his review he describes a set weekly schedule: problems from school, IB syllabus content, then practice questions on Revision Village and Showbie, with his incorrect answers reviewed in the following session.
Student
Blake Eustaquio, Metropolitan School of Panama, Panama. Online, one-to-one.
May 2025 — the first session examined on the new IB Physics guide.
Start
A 3 in Physics and a 4 in Math AI HL on his first Diploma report card.
Result
A final 7 in Physics SL and a final 6 in Math AI HL, awarded by the IB in May 2025. One student, two subjects, one tutor.
Why it’s hard
May 2025 was the first session examined on the new IB Physics guide. There were no past papers in the new format, and his school class felt, in his words, like “a blind test”.
Duration
2 years, September 2023 to the May 2025 exams.
Proof
His written confirmation of his final grades, September 2026, held on file, and his own public Google review of 6 August 2025, which states his starting grades.
Went on to
The University of Massachusetts Amherst.
Final IB grade, May 20257 in Physics SL
IB grades · first report card → predicted → final IB grade, May 2025
Subject
First report card
Predicted
Final IB grade
Physics SL
3
7
7
Mathematics: Applications and Interpretation HL
4
7
6
Blake Eustaquio’s grades as I record them: Physics SL 3, predicted 7, final 7; Math AI HL 4, predicted 7, final 6. It is not an IB document.
“When I first started working with Renzo in the first year of my IB journey, I was struggling a lot with Physics and Math Applications (where my first report card scored 3 & 4). Also, at this time the IB changed the syllabus and created new papers making class in school a blind test. Despite this difficulty, Renzo adapted fully…”
Blake Eustaquio — public Google review, 6 August 2025
Predicted and finalI publish the grade the IB awarded, even when the student’s own review says higher: his review says “up to 7's”. Those were his predicted grades. The IB awarded a 7 and a 6, and only the finals count here.
IB Math AI SL — from a 3 to 7 in both exam papers, May 2024
Aline Pascarelli went from a 3 at the start of the IB Diploma to 7 in both IB Math AI SL exam papers in May 2024: the top grade in every IB Math AI SL exam she sat, after two years of online lessons with me. Her IB Results Summary records each component, transcribed below, and her own public Google review says the same.
Student
Aline Pascarelli, British School of Milan, Italy. Online, one-to-one.
From her IB Results Summary: Paper 1: 7 (63/80). Paper 2: 7 (60/80). The top grade in every IB Math AI SL exam she sat. Those two papers are 80% of the grade, decided in the exam hall, which is exactly where tutoring shows. Exploration: 5 — internally assessed coursework, which IB rules require to be the student’s own work.
Duration
2 years, the full Diploma.
Proof
Her IB Results Summary, held on file and transcribed here, and her own public Google review of 17 July 2024, which says the same.
IB final exam papers, May 2024Paper 1: 7 · Paper 2: 7
IB examination results · May 2024 — transcribed from her IB Results Summary
Component
Assessment
Weighting
Grade
Paper 1
External exam
40%
7
Paper 2
External exam
40%
7
Exploration
Internal assessment
20%
5
My transcription of the May 2024 component grades, drawn as a graphic. It is not the IB document.
“As a student who moved from a Level 3 in IB Maths AI SL at the beginning of my IB course to obtaining a Level 7 in my final exam papers, I would highly recommend Renzo as a Private Tutor. Renzo helped me overcome and understand the difficulties and challenges I encountered over the 2 year program.”
Aline Pascarelli — public Google review, 17 July 2024
IB Math progress in writing, from schools, teachers and parents: three more cases
Anonymised. Names, schools and images are withheld; every message is held on file with its date. The messages below are quoted word for word, from records dated March 2022 to April 2023: foundational algebra in IB Math AI SL, progress during DP1 (the first year of the Diploma Programme), and written mathematical reasoning in the IB Middle Years Programme (MYP).
A test score tripled, then a 4 in the trimester grade, from a 1, during the first Diploma year (2022–23)
Teacher’s email, 28 February 2023; parent’s messages, February and 2 April 2023
From the teaching files: school grades reported by families
Level 5 of the evidence ladder: two IB Math AI SL cases from the private teaching files, anonymised — school grades the families reported in their messages, each after more than three months of lessons.
IB course, and what was measured
Start
Result
Gain
IB Math AI SLSchool test grade reported by the family, March 2022 (teaching file 02)School notice, 2 March 2022, and parent’s message, 22 March 2022, held on file: teaching file 02.
1
5
+4
IB Math AI SLSchool trimester grade reported by the family, in IB DP1, April 2023 (teaching file 03)Teacher’s email, 28 February 2023, and parent’s message, 2 April 2023, held on file: teaching file 03.
IB Math AI SL — from a 1 to a 5 on a school test (March 2022)
After work with me on foundational algebra, the student scored a 5 on the latest school test in March 2022, from a 1. The school wrote to the family, and her parent wrote to me.
In their words
“Keep up your good effort in Maths. Well done for your big improvement in the assessment test!”
— the school’s notice to the family,
“nell’ultimo test ha preso 5 che per lei che aveva 1 e’ un gran successo!! Grazie perché credo che finalmente con lei capisca la matematica”
— her parent, (“in the last test she got a 5, which for her, coming from a 1, is a great success! Thank you, because I think that with you she finally understands maths”)
Starting point
Grade 1, with difficulties in the algebra needed for the Diploma course.
Learning focus
Rebuilding foundational algebra so the student could engage more confidently with current topics.
Reported outcome
A 5 on the latest school test, reported by the family on 22 March 2022.
Held on fileThe school’s notice of 2 March 2022 and the parent’s message of 22 March 2022.
IB Math AI SL, DP1 — a test score tripled, then a 4 from a 1 (2022–23)
During the first Diploma year, with two sessions a week with me, the student’s maths test score tripled, and his trimester grade went from a 1 to a 4, as the family reported on 2 April 2023.
In their words
“He has scored 46% which is three times the previous test. I think that this indicates that, with continued effort, he can improve his Grade this trimester and work towards a better one for the IB next year.”
— his teacher,
“I am so grateful for his tutor Mr. Diaz for helping him work through his math course… 3 times better is just amazing results.”
— his parent, replying to the teacher
“…got a 4 from a 1 this trimester!!!! Celebrate… Even if you’re there as a guide it helps he stay accountable. Helps us keep him on track too!”
— his parent,
Course
IB Mathematics AI SL.
Starting point
A 1 in the first Diploma year.
Learning focus
Strengthening earlier understanding to support the demands of the course.
Reported outcome
A 4 in the trimester grade, reported by the family on 2 April 2023.
Held on fileThe teacher’s email of 28 February 2023 and the parent’s messages, February and 2 April 2023.
Held on file: Aline’s IB Results Summary, Blake’s written confirmation, the 2016 and 2018 emails with their cryptographic signatures, and the school and parent messages above.
How each claim is sourced, and where to check it
Public reviews
The 19 reviews are stored and dated by Google on the Google Business Profile and mirrored on Trustindex. This page quotes them without the reviewers’ names, except the two documented cases, whose own reviews are linked here: Aline’s, 17 July 2024 and Blake’s, 6 August 2025. Each review can be read in full, under the reviewer’s own name, at the source. A business can reply to a review or report it to Google, not edit it (Google’s help on managing reviews). Checked 7 October 2026.
IB documents and written confirmations
Aline’s IB Results Summary is held on file and transcribed here, never reproduced: it is an IB document. Blake’s final grades come from his written confirmation, also held on file. “IB” is used descriptively; this site is independent of the International Baccalaureate Organization. What IB grades mean and how each component is assessed: IB assessment and exams, and the subject pages for IB Mathematics and IB Physics.
Private teaching files
The three anonymised cases come from private records dated March 2022 to April 2023 — a school’s notice, award certificates, a teacher’s email and parents’ messages — that name a student and the school. Their messages are quoted word for word, without a name, a school, an image or any uniquely identifying detail, and the records themselves are not published.
Where to check each case
Each named case has its own page with its sources: the IB Math AI SL case and the IB Physics SL and Math AI HL case. Every IB grade from the documented cases and the public reviews is also published as open data under CC BY 4.0, without names or schools.
Terms used on this page
DP / DP1
The IB Diploma Programme, a two-year course examined in May or November of its second year; DP1 is its first year.
MYP
The IB Middle Years Programme, the IB course for students of about 11 to 16, before the Diploma.
SL / HL
Standard Level and Higher Level, the two levels of an IB Diploma subject; HL has more content and longer exams.
Paper 1, Paper 2
The written exams of a subject, assessed externally by the IB; in IB Mathematics SL they make up 80% of the assessment.
Exploration (IA)
The internally assessed part of IB Mathematics: a written mathematical investigation worth 20%.
IB Results Summary
The IB’s statement of a candidate’s grades for a session, component by component; here it is transcribed, never reproduced.
Predicted and final grade
The predicted grade is the school’s forecast, sent to universities before the exams; the final grade is awarded by the IB after them.
What the reviews say
IB Math & Physics tutoring: what 19 public Google reviews say, quoted by date, never edited
Every review on the Google Business Profile, quoted in the reviewer’s own words. Aline Pascarelli and Blake Eustaquio are named; the other reviewers are not named here, and on Google each review appears in full under the reviewer’s own name.
Public review record — snapshot
Public review record
As of October 2026
Rating on Google
4.9 / 5
Reviews, all attributed to Google
19
Written reviews / rating-only entries
17 / 2
Displayed review dates
23 June 2020–8 July 2026
Source: Google reviews. The same collection is mirrored on Trustindex. Checked 7 October 2026 via Trustindex.
“I tried multiple tutors before Renzo but I never got the results and improvement in my understanding of the subject and school grades as I did with him.”
Public Google review,
“I wouldn’t know half the stuff that was on the exam if not for his help.”
Public Google review,
“What sets Renzo apart is his incredible availability and organization.”
Public Google review,
“…he would always try to identify the root of my confusion, taking time to fill in the knowledge gaps.”
Public Google review,
The public record, year by year, 2020–2026
Each calendar year since 2020 has at least one public review, dated by Google and verifiable on Google. What the reviews of each year state, in brief; each one is quoted in the audit below.
Public Google reviews by calendar year, 23 June 2020 – 8 July 2026
Year
Reviews dated by Google
What the reviews state
2020
2
A general recommendation (); a better understanding of the subject and better school grades, with online lessons on a touch tablet and screen sharing ()
2021
3
The concepts and the technique for exam questions (); a difficult course and earlier gaps explained with patience (); one star rating without text
2022
2
A final 7 in IB Physics SL and a final 5 in IB Maths HL (); the Diploma and its results, then applied physics at university ()
2023
4
Very good grades at school, then at university (); IB Physics exam preparation (); complex concepts in both subjects (); a final 6 in IB Mathematics ()
2024
5
Practice papers and wrong answers worked through (); a general comment and a star rating (); IB Math AI SL from a Level 3 to a Level 7 in the final exam papers, in Aline Pascarelli’s review, and every goal reached in a final school year ()
2025
2
Academic goals reached after four years (); starting grades of 3 and 4 on the first report card, and predicted 7s, in Blake Eustaquio’s review ()
2026
1
Several years of support, from IGCSE Mathematics to IB Physics HL ()
All 19 public reviews, newest first
One row per review, with the date Google shows. Excerpts are verbatim, in the language the review was written in; two entries are a star rating without text.
Public Google reviews, 23 June 2020 – 8 July 2026
Date
Reviewer
From the review, verbatim
8 July 2026Public Google reviewer
Public Google reviewer
One of the things I appreciated the most about his teaching is that he never simply explained the exercise I was struggling with. Instead, he would always try to identify the root of my confusion, taking time to fill in the knowledge gaps.
When I first started working with Renzo in the first year of my IB journey, I was struggling a lot with Physics and Math Applications (where my first report card scored 3 & 4).Documented case — final IB grades, May 2025: 7 in Physics SL, 6 in Math AI HL.
16 July 2025Public Google reviewer
Public Google reviewer
What sets Renzo apart is his incredible availability and organization.
As a student who moved from a Level 3 in IB Maths AI SL at the beginning of my IB course to obtaining a Level 7 in my final exam papers, I would highly recommend Renzo as a Private Tutor.Documented case — IB Results Summary, May 2024: Grade 7 in Paper 1 and Paper 2, Grade 5 in the Exploration.
17 July 2024Public Google reviewer
Public Google reviewer
Ad oggi sono contenta del progresso fatto e del livello che ho raggiunto
8 May 2024Public Google reviewer
Public Google reviewer
Star rating only, no written text
8 May 2024Public Google reviewer
Public Google reviewer
Very helpful, patient, understanding and explains things well with caution.
4 May 2024Public Google reviewer
Public Google reviewer
Renzo tutored me in ib maths and he always found creative and simple ways to explain the concepts.
7 July 2023Public Google reviewer
Public Google reviewer
Renzo is excellent in explaining difficult concepts and making them seemingly simple to comprehend and easy to approach.
11 May 2023Public Google reviewer
Public Google reviewer
He is skilled at explaining complex concepts in a way that his students can easily understand.
5 May 2023Public Google reviewer
Public Google reviewer
I wouldn’t know half the stuff that was on the exam if not for his help.
6 April 2023Public Google reviewer
Public Google reviewer
He is an extremely helpful tutor always ready to explain you new techniques of learning adapting it to each person.
8 August 2022Public Google reviewer
Public Google reviewer
Renzo has been helping me with physics and math throughout the 2-year course of IB.
16 July 2022Public Google reviewer
Public Google reviewer
I prepared with Renzo for both my Physics SL and Maths HL IB exams.
7 July 2021Public Google reviewer
Public Google reviewer
Dalla mia esperienza vi posso consigliare Renzo come tutor, mi ha aiutato molto con matematica corso che mi è difficile anche perché avevo delle lacune.
11 March 2021Public Google reviewer
Public Google reviewer
Highly recommend as a tutor for IB, he helped understand the concepts and exam question techniques!
5 March 2021Public Google reviewer
Public Google reviewer
Star rating only, no written text
12 July 2020Public Google reviewer
Public Google reviewer
I tried multiple tutors before Renzo but I never got the results and improvement in my understanding of the subject and school grades as I did with him.
23 June 2020Public Google reviewer
Public Google reviewer
He helped me a lot and taught a lot of new things.
Read every review in full, under the reviewer’s own name, on Google.
What the written Google reviews describe: six themes, each cited by date
Reading the written reviews side by side shows six themes. Each one names the public reviews it rests on, by the date of the review on the Google record.
Themes I identified from the written reviews in the audit above. These accounts describe selected students’ experiences and do not represent every student’s outcome.
Understanding, and the gaps behind it
Two reviews describe the work as going to the source of the difficulty: one says each session looked for the root of the confusion and took time to fill in the knowledge gaps; the other says maths was hard partly because of gaps, and that concepts were explained with patience.
ReviewsPublic Google reviews of 8 July 2026 and 7 July 2021
Difficult concepts made clear
Three reviews from 2022 and 2023 describe difficult concepts being explained clearly enough to follow, in Mathematics and in Physics.
ReviewsPublic Google reviews of 8 August 2022, 11 May 2023 and 7 July 2023
Explanations and pace that adapt
Three reviews describe lessons adjusted to the student: time given to the point that needed it, concepts explained on the spot without advance notice, and teaching fitted to the student’s own way of learning.
ReviewsPublic Google reviews of 16 July 2022, 4 May 2024 and 6 August 2025 (Blake’s)
Practice and review of mistakes
Two reviews describe working through practice papers and going back over the answers that were wrong, in the lesson or in the following session.
ReviewsPublic Google reviews of 4 May 2024 and 6 August 2025 (Blake’s)
Continuity over several years
Some reviews describe work that lasted several years: four years of Mathematics, a two-year Diploma, lessons continuing into university.
ReviewsPublic Google reviews of 8 August 2022, 17 July 2024 (Aline’s) and 16 July 2025
Preparation and confidence for the exam
Two reviews link the work to the exam itself: arriving prepared and calm at the papers, and having worked through many past-paper questions beforehand.
ReviewsPublic Google reviews of 16 July 2022 and 8 August 2022
The rubric
Six proofs to ask any IB Math & Physics tutor for, and where to find each one here
A named student, with the school and the exam session
No. They’re the ones I can prove. Ten years of teaching means far more students than this page names.
Q.02
Why do you name only two students?
Because I name a student only with their agreement and the document in hand. Everyone else appears anonymously, with the source and the date of each outcome.
Q.03
Can a student go from a 3 to a 7 in the IB Math AI SL exam papers?
Yes. Aline Pascarelli did, in May 2024: a 7 in Paper 1 and a 7 in Paper 2, from a 3. She began IB Math AI SL at Level 3, as her own public Google review says, and her IB Results Summary records both papers, the two externally assessed exams and 80% of the assessment. Her case page transcribes every component.
Q.04
Is it realistic to go from a 3 to a 7 in IB Physics?
Yes. Blake Eustaquio did: a final 7 in IB Physics SL, May 2025. He started from a 3 on his first Diploma report card, as his own public Google review says; his final grade is in his written confirmation, held on file. His case page shows both.
Q.05
Any results on the new IB Physics syllabus?
Yes: a final 7, the highest grade the IB awards, in its very first exam session, May 2025. It is Blake Eustaquio’s IB Physics SL result. I teach both levels of the current course, SL and HL, including the scientific investigation.
Q.06
Were the 7s in Blake’s review his final grades?
No, they were predicted. The IB awarded a 7 and a 6, and only those count here. His final IB grades, May 2025, were a 7 in Physics SL and a 6 in Math AI HL, as he confirmed in writing; his case page shows his review with a note that keeps the two apart.
Q.07
Are Aline Pascarelli’s 7s exam-paper grades or a final subject grade?
Exam-paper grades, and that’s the point: Paper 1 and Paper 2 are 80% of the grade, decided in the exam hall, where a tutor’s work shows. The Exploration is coursework IB rules require to be the student’s own; hers was a 5. Her case page transcribes each component from her IB Results Summary.
Q.08
How can I check the results on this page?
Every result names its source, and there are three kinds. The student’s own public Google review, dated by Google, which anyone can read; a document held on file — Aline’s IB Results Summary, Blake’s written confirmation of his final grades; and the dated messages of schools, teachers and parents, held on file. The eight things you can check without asking me are listed above.
Q.09
Who teaches the IB lessons?
Renzo Diaz, every session. Never a substitute. I have taught IB since April 2016, one-to-one; the dated record shows each date and who set it.
Q.10
How much do IB lessons cost?
IB programmes start at €400 a month and IGCSE at €320; the exact fee is confirmed after the free strategy call, before any commitment. Those prices are for booking directly with me; tutoring platforms that list me add their own commission. The first month is four one-hour sessions; after it, you decide whether to continue, month to month, with no minimum term.
Q.11
Do you guarantee an IB grade?
No. No honest tutor can. This page shows what has happened, and the source behind each result.
Close / 09 — EntryItaly · Online
Next step
IB Math & Physics: ready to find where the marks are going?
Watch me diagnose a question your child is stuck on — live, in 45 minutes, before you decide anything. You’ll see how I find the step behind it, and what it would take to fix.
Lessons with Renzo Diaz
Format
One-to-one on Zoom, 60 or 90 minutes, once or twice a week.
Languages
English or Spanish.
Lesson record
Every lesson recorded, with an AI-generated summary and a searchable archive; stored in the EU (Zoom with EU data residency, storage in Ireland) for the engagement plus up to six months. The AI providers do not use it to train or fine-tune their models.
How it starts
A free 45-minute strategy call, then four one-hour sessions; then month to month, with no minimum term.
Fees
Set per programme, confirmed after the call, before any commitment.
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