IB Math AA HL Papers: Format, Marks and a Better Revision Plan
By Renzo Diaz·5 min read
AA HL has three written papers and a mathematical exploration. Paper 1 prohibits the calculator; Papers 2 and 3 allow it. The current exams carry 110 marks in each of Papers 1 and 2, and 55 in Paper 3, which runs one hour 15 minutes. The exploration is worth 20% of the final grade. The format changes for first assessment in May 2029 — check which cohort you belong to before using a study guide built for the other one.
A student preparing for AA HL needs more than a list of topics — they need to know exactly what each paper actually tests, how long they have, and what "full marks" requires beyond a correct final answer. Confusing the current paper format with the one coming in 2029, or treating a correct number as automatically worth full marks, both produce a weaker revision plan than the exam actually demands.
The exam does not ask whether you can find an answer. It asks whether you can show, and defend, the method that got you there.
1. What each paper actually tests
Paper 1 runs two hours with no calculator allowed, worth 110 marks and 30% of the final grade — it tests the same five syllabus areas as the rest of the course, but its distinctive constraint is that a graphic display calculator can't do the algebra or numerical checking for you. Paper 2 also runs two hours for 110 marks and 30%, this time with the GDC permitted. Paper 3 is different in kind: one hour 15 minutes, 55 marks, 20% of the final grade, built around two compulsory extended-response problems rather than a series of shorter questions. The mathematical exploration — coursework marked internally and moderated externally — contributes the remaining 20%.
Paper 3's duration is worth double-checking directly rather than trusting an older guide: the original AA subject brief and 2019 specimen paper gave Paper 3 as one hour, and the IB's own 2029-curriculum update page confirms the duration was subsequently extended to one hour 15 minutes for the current course — while also confirming the exam reverts to one hour once the revised course takes over. Relying on an outdated specimen paper produces the wrong exam plan for a live exam.
Layer 1 — Paper 1 — 2 hours, 110 marks, 30%
No calculator. Tests exact forms, transformations, calculus and proof through fully written mathematical argument.
Layer 2 — Paper 2 — 2 hours, 110 marks, 30%
GDC allowed. Still requires a mathematical argument, not just a calculator-produced number.
Layer 3 — Paper 3 — 1 hour 15 minutes, 55 marks, 20%
Two compulsory extended-response problems, each developing an idea over several parts.
Layer 4 — Mathematical exploration — 20%
Internally assessed coursework, externally moderated, worth the same weighting as Paper 3.
2. A correct answer is not automatically full marks
Paper 1's real constraint isn't the missing calculator — it's that every step of the reasoning has to be visible on the page. Practise exact forms, transformations, calculus and proof while writing enough intermediate steps for another person to reconstruct the approach without you there to explain it. The IB's own guidance to examiners is explicit that a numerically correct answer with no supporting working does not automatically earn full marks — the method has to be shown, not just implied.
The same principle carries into Paper 2, where a calculator can solve an equation or plot an intersection but can't explain why that operation answers the question being asked. A useful discipline is to record the model or equation used, define the variables, show the relevant calculator output, and interpret the result with correct units and accuracy — then ask, for every practice question: if the final numerical answer were removed, would the remaining working still show a valid route to it? If not, the script is fragile even when the number happens to be right.
If you removed the final number from your working, would what's left still show a valid route to it?
3. Paper 3 rewards working through both problems, not committing to one
Paper 3 contains two compulsory extended-response problems, and both need a genuine attempt — treating it as a choice between them, the way a shorter, timed exam sometimes works, leaves real marks unattempted for no reason. A more reliable approach is to scan both problems first, then divide the available time so that both get worked through, keeping enough time in reserve to attempt the later, harder parts of each rather than polishing the earlier ones.
These problems often introduce an unfamiliar pattern or definition and build on it over several parts. The useful method is the same one mathematicians actually use: make a conjecture, test it against a small case, then justify the general step. If a later part is genuinely inaccessible, writing down the partial structure already reasoned through and moving on captures marks that abandoning the problem entirely would lose.
4. A review loop that targets the actual failure point
Marking a practice paper against the correct scheme is the easy part. The more useful step is recording marks lost by reason, not just by topic — course knowledge, choice of method, algebra, notation, or time management are different problems with different fixes, and lumping them together as "calculus mistakes" hides which one actually needs work.
A four-step loop makes this concrete: sit one paper under real timed conditions, using the syllabus and exam session relevant to your own cohort; mark it and record marks lost by reason; redo two of the missed questions without the solution in front of you, explaining aloud why each method works; then, a week later, attempt an unfamiliar question testing the same underlying idea. That last step is the actual test — recognising a worked solution you've already seen is not the same skill as producing the method again, unprompted, on something new. In an era where software can produce a correct-looking answer instantly, that transfer step is exactly what the exam is checking for, and exactly what a diagnostic approach to preparation is built to target.
Recognising a method you've already seen is not the same skill as producing it again, unprompted, on a new problem.
5. Which version applies to you
The IB has confirmed that the current mathematics courses have their final assessment session in November 2028. The revised course begins teaching in August 2027, with its first assessment in May 2029 — meaning two DP cohorts starting in consecutive years sit genuinely different exams. For the revised AA HL course, Paper 1 and Paper 2 both drop to 100 marks each, and Paper 3 drops to 50 marks and returns to a one-hour duration. The internal-assessment criteria change too, moving from the current five-criterion exploration rubric to a four-criterion model built around problem specification, abstraction, computation and interpretation.
A student starting the Diploma in 2026 and one starting in 2027 need different exam reference material — checking which subject brief and which specimen papers actually apply to your own cohort is worth doing before building a study plan around either one.
Two students starting the Diploma one year apart can be sitting genuinely different exams. Check which cohort you belong to before trusting any study guide.
Sources
Both sources below are the IB's own current pages, checked directly in a browser — ibo.org, like several IB-hosted subdomains, blocks non-browser requests to some of its pages, which can make a genuinely public page look inaccessible to automated tools without being inaccessible to a real visitor.