Choosing IB Maths: AA, AI, SL or HL? A Parent's Guide

Your child's school asks you to choose IB mathematics. You hear "AA", "AI", "SL" and "HL", followed by confident advice about which one is best. Before picking a label, separate three questions: what mathematics does your child enjoy and understand, what will the school actually teach, and what do likely university courses require?

First, write down the full course name

The IB lists four Diploma Programme options: Mathematics: analysis and approaches at standard level or higher level, and Mathematics: applications and interpretation at standard level or higher level. Students take only one mathematics course as part of their diploma. "IB maths" is therefore not enough detail for a school conversation or an admissions check.

In school conversations, analysis and approaches is often shortened to AA, applications and interpretation to AI, standard level to SL and higher level to HL. Here, AI is a mathematics course name, not artificial intelligence. Keep the full name and level together whenever you record a requirement.

AA and AI differ in emphasis, not in whether thinking matters

The IB describes analysis and approaches as emphasising algebraic methods, mathematical thinking, and real and abstract problem-solving. Its subject brief stresses constructing, communicating and justifying mathematical arguments. Ask your child how they feel about explaining why a method works, rather than only reaching an answer.

The IB describes applications and interpretation as emphasising modelling, statistics and real-world mathematical problem-solving using technology. That does not make it "maths without reasoning". Interpreting what a result means is part of the work. Ask whether your child likes making sense of data, comparing models and explaining what an answer tells them about a situation.

SL and HL are a separate choice

Both mathematics subjects are available at SL and HL. Higher level is not simply a more impressive name: the IB says HL courses cover a greater body of knowledge, understanding and skills. The current AA subject brief recommends 150 teaching hours at SL and 240 at HL. These are teaching-hour recommendations, not a promise about how much homework your child will receive.

Consider the whole Diploma timetable. The IB says students take at least three and no more than four subjects at HL, with the rest at SL. A mathematics choice has to work alongside the other subjects and the Diploma core. Ask the school what a typical week looks like before assuming that an extra HL will keep every future option open.

Check university requirements before relying on a career label

"AA for engineering" or "AI for business" is too broad to make the decision for your family. The IB tells students to check individual universities and work with a guidance or university careers counsellor. Different degrees, institutions and countries can ask for different subjects, levels and minimum grades.

1. 1Make a small list of plausible degree courses, even if your child is not ready to choose a career.
2. 2Open each university's current entry-requirements page for the relevant qualification. Record the full mathematics course, level and grade, plus any other subject conditions.
3. 3Separate required, preferred and recommended subjects. The IB explains that these terms do not mean the same thing.
4. 4If a page says only "Mathematics HL" or uses unclear wording, ask that university for written clarification. Do not treat an old recognition list or a screenshot from another parent as the final rule.
5. 5Take the list to the school counsellor and mathematics teacher. Compare eligibility with your child's readiness and the courses the school offers.

Ask these questions before signing the subject-choice form

• Which of the four mathematics options do you actually offer? Are there timetable or class-size conditions?
• What evidence from my child's current work supports your recommendation? Can we see sample work and discuss it together?
• How does this choice fit the rest of their SL/HL combination and likely university requirements?
• What support is available if they struggle, and when can a course or level change still be considered?
• Which syllabus and examination session will my child follow?

That last question matters now. The IB's mathematics page separates the existing subject briefs, first assessed in 2021, from briefs for first assessment in 2029. Do not mix assessment details from the two versions. Confirm the correct brief with the school for your child's examination session; the broad comparison here is not a substitute for that check.

What to do this week

Create one page with three headings: "Child's work and interests", "School's actual offering" and "University requirements". Add evidence under each, then arrange one conversation with your child, the mathematics teacher and counsellor. The aim is a choice your child can explain and sustain, with its future constraints understood, not a course name chosen for prestige.

Official sources checked on 13 October 2026. The 2019 course-comparison article explains the existing courses; use the examination-session brief supplied by your school for assessment details. University requirements can change and must be checked directly.