Do all MYP schools use the same Extended Mathematics criteria?

Authorized MYP schools use the same four mathematics criteria: Knowing and understanding, Investigating patterns, Communicating, and Applying mathematics in real-life contexts. Each criterion has a maximum achievement level of 8 and is intended to be equally weighted in the final criterion total. However, schools usually design their own classroom tasks and task-specific clarifications. The evidence available to teachers can therefore differ in difficulty, format, and breadth. Common criteria create a shared framework, but they do not make every internal assessment identical.

Can the same quality of work receive different internal grades at two schools?

Some variation is possible because classroom work is marked through teacher professional judgment. Teachers should apply the same IB descriptors, but they may be judging different tasks or different collections of evidence. Schools reduce inconsistency through collaborative planning, common marking, and internal standardization discussions. A clear assessment policy should also explain how final criterion levels and report grades are determined. Significant unexplained differences should be reviewed by the subject leader or MYP coordinator rather than assumed to be normal.

Is MYP Extended Mathematics eAssessment marked by the student's teacher?

No, the official Extended Mathematics on-screen examination is externally marked by IB-appointed examiners. The student's classroom teacher may provide a predicted grade, but that prediction does not determine the final IB result. Examiners use authorized marking instructions to award raw marks for the candidate's responses. The IB then applies the grade boundaries established for Extended Mathematics in that examination session. This external process provides greater consistency across schools than ordinary classroom assessment.

Are Extended Mathematics eAssessment grade boundaries fixed?

No, official eAssessment grade boundaries may change between examination sessions. The IB reviews candidate work, grade descriptors, examiner judgments, statistical evidence, and the demand of the assessment when awarding grades. A harder examination can therefore have a lower raw-mark boundary without lowering the intended standard. Boundaries are also subject-specific, so students should not borrow figures from standard Mathematics or another MYP subject. Any boundary published before the session's official results should be treated as an estimate.

Is an internal total of 28 out of 32 automatically a grade 7?

Under the commonly used MYP classroom conversion table, a criterion total from 28 to 32 corresponds to grade 7. Students should nevertheless confirm the reporting policy used by their school, particularly if the school also reports percentages or national grades. The total should come from one final achievement judgment for each of the four criteria, not from converting a raw test percentage directly into points out of 32. This classroom calculation must not be substituted for the official eAssessment boundary process. External on-screen examinations begin with raw marks and use boundaries established for the relevant subject and session.

Does a grade 6 in Extended Mathematics mean the same as a grade 6 in standard Mathematics?

Both results use the MYP 1--7 scale and communicate achievement against MYP grade standards. However, Extended Mathematics includes additional breadth, depth, and complexity, so the underlying assessment demand is not identical to standard Mathematics. The two courses also have separate on-screen examinations and may have different session boundaries. A grade 6 in either pathway is a strong result, but it should always be read together with the course title. Schools should record clearly whether the student completed standard or Extended Mathematics.

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Is MYP Extended Mathematics Graded the Same Everywhere?

MYP Extended Mathematics Assessment MYP IB Math IB Grading

Priyanka N.

• 11 Sept 2026•10

Is MYP Extended Mathematics Graded the Same Everywhere?

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Is MYP Extended Mathematics Graded the Same… | RevisionDojo

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Is MYP Extended Mathematics Graded the Same Everywhere?

MYP Extended Mathematics Assessment MYP IB Math IB Grading

Priyanka N.

• 11 Sept 2026•10

MYP Extended Mathematics is not graded identically across every school in every context. Authorized MYP schools use the same IB mathematics objectives and assessment criteria, but teachers create and mark most classroom assessments locally. Task difficulty, evidence collection, reporting methods, and teacher judgment can therefore vary.

Official MYP Extended Mathematics eAssessment is different. Candidates in the same examination session complete an IB assessment that is externally marked using a standardized process and session-specific grade boundaries. This article explains what is consistent, what can differ, and how to interpret each type of grade.

The short answer: one framework, two grading contexts

MYP Extended Mathematics grading consistency depends on which result is being discussed.

Type of grade	Who designs and marks it?	Degree of standardization
Classroom assessment	Designed and marked by the school	Common IB criteria, but different tasks and judgments
School report grade	Determined under the school's assessment policy	Comparable in principle, but reporting methods may differ
Official eAssessment grade	IB examination marked by IB-appointed examiners	Internationally standardized for that subject and session

Two students can receive an internal grade of 6 after completing different work. By contrast, official eAssessment candidates receive grades through the same external process. An internal grade reports achievement within the school's programme, while an eAssessment grade is an IB-validated result.

What remains consistent in MYP schools?

MYP Mathematics, including the extended pathway, uses four objectives and corresponding assessment criteria:

Criterion	Mathematical performance assessed
A: Knowing and understanding	Selecting and applying mathematical knowledge and procedures
B: Investigating patterns	Identifying relationships, forming general rules, and justifying conclusions
C: Communicating	Using correct notation, representations, terminology, and organization
D: Applying mathematics in real-life contexts	Modelling situations, interpreting results, and evaluating solutions

Each criterion has a maximum achievement level of 8 and is equally weighted. Extended Mathematics uses the same broad criteria as standard Mathematics, but includes additional breadth, depth, and challenge. Students do not receive higher marks simply because they take the extended pathway; their work must demonstrate the relevant achievement descriptors.

The official IB Mathematics subject brief summarizes the objectives, criteria, content branches, and assessment structure. The IB's overview of Mathematics in the MYP also explains how Extended Mathematics supplements the standard framework.

Why internal grades can differ between schools

Internal tasks are created and marked by teachers. One school might assess algebra through a test and modelling investigation, while another uses an inquiry involving functions, graphs, and written justification.

Variation can result from:

the content and complexity of the task
the amount of scaffolding or calculator support
the evidence used to determine final criterion levels
the timing and frequency of assessment
local conversions into percentages, letters, or national grades
the school's published assessment policy

Teachers should apply the IB criterion descriptors through a best-fit judgment. This does not necessarily mean averaging every score from the term. A teacher may give greater significance to recent, comprehensive evidence when it better represents the student's current achievement.

Professional judgment remains involved, so schools should conduct internal standardization. Teachers might mark common responses, compare borderline work, and discuss how descriptors apply. This helps prevent one class from being judged more harshly than another.

How an internal MYP grade is calculated

For school reporting, a teacher normally determines one final level for each criterion. The four levels are added to produce a criterion total out of 32.

Criterion	Example final level
A	7
B	6
C	7
D	5
Total	25 out of 32

A commonly used MYP conversion places a total of 25 in the 24--27 range, producing grade 6.

Criterion total	Common final grade conversion
0--5	1
6--9	2
10--14	3
15--18	4
19--23	5
24--27	6
28--32	7

Students should confirm that their school uses this table in its current assessment policy. Criterion levels are not percentages: level 6 does not simply mean 75%, and a total of 24 does not mean every task received 75%.

RevisionDojo provides further explanations in its guide to MYP grade boundaries and overview of how MYP Mathematics is assessed.

How Extended Mathematics eAssessment is graded

Students seeking an IB-validated Extended Mathematics result complete an end-of-course on-screen examination. Mathematics and Extended Mathematics examinations are externally marked rather than being teacher-marked assessments moderated afterward.

The examination includes three broad task types:

Knowing and understanding, principally assessing Criteria A and C
Investigating patterns, principally assessing Criteria B and C
Applying mathematics in real-life contexts, principally assessing Criteria C and D

Criterion C appears throughout the examination. Accurate notation, connected reasoning, labelled representations, and appropriate mathematical language therefore matter across multiple tasks.

The official process is:

The candidate completes the Extended Mathematics on-screen examination.
IB-appointed examiners award raw marks using authorized marking instructions.
The marks are combined into a total raw score.
The IB establishes boundaries for Extended Mathematics in that examination session.
The raw total is converted into an official grade from 1 to 7.

The IB confirms that on-screen examinations are externally marked by trained examiners. This creates stronger cross-school consistency because the candidate's own teacher does not determine the final result.

Are eAssessment grade boundaries fixed?

No. Extended Mathematics boundaries can change between examination sessions. The IB considers candidate work, grade descriptors, examiner judgment, statistical evidence, and the demand of the assessment when awarding grades.

A more difficult examination may have lower raw-mark boundaries, while a more accessible examination may have higher ones. This is intended to preserve the meaning of each final grade, not to award grades to a fixed percentage of candidates. The IB's explanation of student assessment and grade boundaries outlines this wider process.

Students must use boundaries for the correct subject and examination session. Boundaries from standard Mathematics, an older session, or a classroom conversion table cannot reliably predict an official Extended Mathematics result.

What students and coordinators should check

Always identify whether a displayed result is an internal report grade, predicted eAssessment grade, or official IB result. These labels are not interchangeable. Schools should explain how criterion levels are determined, which conversion table is used, and whether students are registered for eAssessment.

For the full MYP Certificate, the IB currently requires eight assessment components, at least 28 points out of 56, at least grade 3 in every required component, and completion of the school's service expectations. The IB grading and awards page gives the current certificate conditions. These requirements do not establish a universal pass mark for internal school reports.

Preparing despite differences between schools

Prepare against the published mathematical skills rather than trying to reverse-engineer one teacher's percentages. After each task, identify whether marks were lost through mathematical knowledge, investigation, communication, or contextual application.

Effective practice should include procedural questions for Criterion A, justified general rules for Criterion B, complete notation and explanations for Criterion C, and modelling with interpretation and evaluation for Criterion D. eAssessment candidates should also practise completing extended problems in a timed on-screen format.

RevisionDojo's MYP Extended Mathematics resources and Extended Mathematics Questionbank support criteria-based practice. Students should still compare their work with teacher feedback, task-specific clarifications, and the school's assessment policy.

Conclusion

MYP Extended Mathematics follows a shared IB framework, but internal grades are not perfectly interchangeable because schools design tasks and make reporting decisions locally. Official eAssessment results are more standardized because candidates take an IB examination, trained examiners mark it, and session-specific boundaries convert raw marks into grades from 1 to 7.

Students should distinguish criterion totals, report grades, predictions, and official results. RevisionDojo Study Notes and the Extended Mathematics Questionbank can then provide targeted practice for the content and reasoning assessed in both classroom tasks and eAssessment.

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