IB MYP Maths Class 9 and 10: Standard and Extended, with eAssessment

The two years where IB maths starts to diverge

MYP 4 and 5, which in most schools are Class 9 and Class 10, are where mathematics separates into a standard route and an extended route. Extended covers additional and more demanding content, and the choice reaches well beyond these two years.

Standard gives all students sound basic principles. Extended supplements that with additional topics and skills, and greater breadth and depth, and is the intended foundation for DP Mathematics at Higher Level. Choosing standard does not formally bar a student from DP HL, but extended is the normal route and the practical gap is real. Schools implement the split differently, so confirm with your school which route your child is on; it is not always obvious from a report.

Still four criteria, with more at stake

Assessment remains against criteria A to D — knowing and understanding, investigating patterns, communicating, and applying mathematics in real-life contexts — but at this level the investigations are longer and the communication expectations are higher.

The pattern we see most often is a capable student plateauing here. They were carried through MYP 1 to 3 by accurate computation, which serves criterion A well. At MYP 4 and 5 a criterion B investigation needs a genuine generalisation and a justification of why the rule holds, not just the rule. Criterion D continues to be where marks are most available and least often collected, because applying mathematics to an unfamiliar context requires deciding what to use before using it, and that decision is rarely taught.

The content DP will assume

Alongside the criteria, these years must build the technique the Diploma takes for granted.

Algebra to extended standard: expanding, factorising, quadratics, simultaneous equations, indices and surds. Functions: linear, quadratic and exponential, with graphs, transformations and the function language that DP uses constantly from its first week. Geometry and trigonometry: Pythagoras, right-angled and non-right-angled trigonometry, circle geometry and three-dimensional work. Statistics and probability: representation, spread, correlation and conditional probability.

We are deliberate about this because DP Higher Level moves fast. A student who scraped through extended will find the first term of Analysis and Approaches HL unforgiving, and it is better to say so in Class 10, when there is a summer to use, than in Class 11 when there is not.

eAssessment, where your school offers it

IB offers an optional on-screen external assessment at the end of MYP 5. Schools choose whether to register for it, only MYP year 5 students may sit it, and there are separate papers for mathematics and for extended mathematics. A student pursuing the full MYP Certificate completes eight eAssessments across their subjects.

Where a school does offer it, it is worth preparing for specifically: working through mathematics on screen, with on-screen tools, is a different experience from writing on paper, and students who have only ever done the latter lose time to the interface rather than to the mathematics.

Ask your school whether your child will sit it, and tell us, because it changes the final weeks of the course.

Choosing AA or AI, two years early

The DP mathematics route is chosen in Class 10 and constrains university applications two years later. Analysis and Approaches is the more algebraic and proof-oriented course and is what mathematics-heavy degrees expect. Applications and Interpretation is modelling and technology-oriented and genuinely suits other paths.

We give an honest view based on how a student actually works rather than on how they would like to be described, because the cost of this being wrong is paid in Class 12. IB publishes a recognition guide for the two courses, and it is worth reading that alongside the entry requirements of the specific universities you have in mind, since departments differ.

One timing point for current Class 10 families: the IB is revising DP mathematics, with first teaching in August or September 2027 and first assessment in May 2029. A student starting DP in 2027 will therefore be on the new syllabus rather than the current one. Ask your school's DP coordinator which syllabus your child's cohort will follow.

Transferring in from another system

Students arriving from CBSE, IGCSE or a national curriculum usually have sound technique and are thrown by the assessment style. They have been marked for years on correct answers, and MYP marks investigation, communication and application separately.

The first few weeks with these students are mostly about showing them what is being asked for. It is rarely a mathematics problem.

How the classes run

Live online group classes, maximum eight students, grouped by MYP year and route so standard and extended students are not taught as one. Investigations are written and marked individually against the criteria, which is the only way criterion B and C improve.