IB Diploma for Parents: Subjects, Core and Key Decisions
By Renzo Diaz·4 min read
The Diploma Programme combines six subjects with three core elements — Theory of Knowledge, the Extended Essay, and Creativity, Activity, Service. Subjects are graded 1 to 7; TOK and the Extended Essay together can add up to 3 points, for a maximum of 45. A total of 24 points alone does not guarantee the Diploma — the IB sets several further conditions, including a minimum grade in every subject, that a headline total can hide.
A parent reading a school report for the first time is often handed a wall of terms — HL, SL, TOK, CAS, predicted grade — without a map of how they fit together or which ones actually determine an outcome. Most of the genuinely useful decisions in the DP get made in the first few months, before a subject choice becomes expensive to reverse.
Most of the decisions that actually matter in the Diploma get made in the first few months — before a subject choice becomes expensive to reverse.
1. The structure, and what 45 points actually means
Every DP student takes six subjects, spread across the IB's required subject groups, plus the three core elements. Subjects are graded 1 to 7; TOK and the Extended Essay together can contribute up to 3 additional points, calculated from a table that combines the two components' own A–E grades. That gives a theoretical maximum of 45 — six subjects at the top grade, plus the full 3 core points — but the maximum is not the pass threshold.
Reaching the Diploma actually requires several separate conditions holding at once, not just a total of 24 points: a grade must be awarded in every subject and in TOK and the EE, every subject needs at least a 2, no more than two grade 2s are allowed across the whole Diploma, no more than three grades of 3 or below are allowed, and there are separate minimum point thresholds within the HL and SL subjects specifically. A strong total score can still fail to clear the Diploma if just one of these specific conditions isn't met — which is exactly why a single number is the wrong thing to focus on when checking whether a student is actually on track.
A strong total score can still miss the Diploma if just one specific condition isn't met. The total alone was never the whole test.
2. The course choices that shape the next two years
Most students take three subjects at Higher Level and three at Standard Level, though the IB permits three or four HL subjects depending on the student and school. Recommended teaching time is 240 hours for an HL subject against 150 for SL — a genuine difference in depth and workload, not just extra practice on the same material.
Universities can require a particular subject at a particular level and a particular grade, so checking a plausible target degree's actual requirements before finalising subject choices matters more than choosing based on general reputation. The school is often an excellent guide on pedagogy and pacing, but admissions conditions belong to the specific university programme and entry year, not to the school — a student's total IB score is only one piece of what a real admissions requirement actually checks.
| Decision | Check now | Ask the school |
|---|---|---|
| Math AA or AI, HL or SL | Several actual target degree course pages | What are the deadlines and consequences for changing later? |
| Physics HL or SL | Subject requirements for plausible degrees | Which current syllabus and exam format does this cohort use? |
| Three or four HL subjects | Combined workload and school policy | How are predicted grades and support handled? |
3. The core, in plain language
Theory of Knowledge asks how knowledge claims are made and evaluated, and is assessed through an exhibition plus a 1,600-word essay. The Extended Essay is an independent research project resulting in a paper of up to 4,000 words, with its assessment criteria changing for first assessment in May 2027. Creativity, Activity, Service is a programme of creative, physical and service experiences with reflection and evidence of learning outcomes — it doesn't receive an A–E grade, and school-assessed completion is what's required rather than a mark.
Asking the school directly for its actual internal deadlines for the exploration, the scientific investigation, the EE, TOK and CAS is worth doing early — the IB's own external timetable and a school's internal milestones serve different purposes, and a vague "there's plenty of time" is far less useful than the actual dates and current status of each component.
4. How to read a concerning report
A school report can contain a test mark, a predicted grade, an internal IB grade estimate, and comments on approaches to learning, all in the same document — and treating them as interchangeable is a common mistake. The useful questions are which evidence actually supports each prediction, which specific component is weak, and whether the underlying difficulty is course knowledge, exam performance under pressure, or how the working is presented on the page. Those are three different problems with three different fixes.
The parent's most useful role tends to be helping the student obtain a clear, specific account of the actual problem and the next honest test of progress — not supplying the answers directly. In Maths and Physics specifically, an independently solved unfamiliar question usually reveals more than a completed worksheet does.
5. Five questions for a meeting with the coordinator
A short, specific list travels better into a real meeting than a general sense of concern does.
Layer 1 — Syllabus and assessment year
Which syllabus version and assessment year applies to each of the student's subjects?
Layer 2 — Course-degree compatibility
Are the current subject choices actually compatible with the student's plausible target degrees?
Layer 3 — Evidence behind predictions
What evidence supports the current predicted grades, and under what circumstances can they change?
Layer 4 — Internal deadlines
Which internal school deadlines precede the official IB submission and exam dates?
Layer 5 — What needs to change
If a grade is stuck, which precise part of the student's own work actually needs to change? Keeping the written answers to these five questions creates a genuine reference point for later course changes, university applications, and revision decisions — far more useful than relying on memory of a single conversation months later.
Sources
Sources below are the IB's own current pages, checked directly in a browser.