How Is MYP Maths Assessed Against Criteria A–D?

MYP Maths uses four criteria, each marked out of 8 using task-specific descriptors set by your teacher: A (Knowing and Understanding), B (Investigating Patterns), C (Communicating), D (Applying Maths in Real-Life Contexts). Your four scores add up out of 32, then convert to a 1–7 grade using the IB's grade boundary conversion for your year group.

Criterion A checks whether you can select and apply the right maths — correct formulae, accurate calculations, appropriate techniques — to solve problems in both familiar and unfamiliar situations. It's the closest thing to a traditional maths test: know the method, use it correctly, get the right answer, and show your working clearly.

Criterion B assesses your ability to spot patterns, describe them as general rules, and justify or prove why the rule works — using inductive and deductive reasoning. It's less about getting one right answer and more about explaining the pattern behind several examples, then testing whether your rule holds up.

Criterion C looks at how clearly you use mathematical language, notation, and different forms — diagrams, tables, graphs, symbols — to explain your reasoning, plus whether your working has a logical, easy-to-follow structure. A correct answer with no explanation or messy layout scores lower here even if Criterion A is perfect.

Criterion D tests whether you can identify relevant elements of a real-world problem, apply appropriate maths to it, and — crucially — comment on whether your solution actually makes sense in that real context. It's the criterion most tied to modelling: budgets, sports statistics, design problems, or data from genuine sources.

Each criterion is marked out of 8, so your four scores total a maximum of 32. Schools use the IB's official grade boundary tables — specific to each MYP year — to convert that total into a 1–7 grade, the same scale used across all MYP subjects. Boundaries are set by the IB, not by individual teachers.

Not exactly evenly, but you can't ignore one. A 7 overall usually needs a total of roughly 28-32 out of 32, so scoring an 8 on two criteria and a 5 on the other two won't get you there — every strand pulls real weight. Weak Communicating or Applying scores are the most common reason strong calculators cap out at a 5 or 6.

There's no fixed national frequency — it depends on your school's assessment plan — but the IB requires each criterion to be assessed at least twice across every two-year MYP phase (MYP 1–2 or MYP 3, for example). In practice, most schools assess each criterion three to six times a year across tests, investigations, and projects.

Mostly coursework-style tasks set and marked internally by your own teacher, using task-specific rubrics built from the IB's generic criteria descriptors. There's no external MYP Maths exam at all — unlike the Diploma Programme, MYP assessment is entirely school-based, though some schools also run internal end-of-year tests for their own tracking.

MYP uses four criteria (A–D) marked internally out of 8 each, with no external exam. DP Maths AA or AI uses externally set and marked written papers plus, for some options, an internally assessed Mathematical Exploration — a real shift in structure that starts in DP year 1, so MYP 4-5 (or an equivalent pre-DP year) is where students should start practising exam-style timed papers.

Target the criterion you're weakest on specifically — don't just do more generic practice. Ask your teacher for the task-specific descriptors before you submit anything, and check your work against each band's exact wording. Most grade jumps come from fixing one habit: showing full working (A/C) or adding a real-world sense-check to your final answer (D).