MYP Standard Mathematics has four assessment criteria, labelled A, B, C, and D. They are Knowing and understanding, Investigating patterns, Communicating, and Applying mathematics in real-life contexts. Each criterion is equally weighted and has a maximum classroom achievement level of 8, producing a combined maximum of 32.
That short answer needs one important qualification. Classroom criterion levels out of 8 are not the same as raw marks in the externally marked MYP Standard Mathematics eAssessment. This article explains both systems, shows how the classroom grading calculation works, and clarifies how MYP Standard Mathematics grade boundaries should be used.
MYP Standard Mathematics number of criteria: the four criteria
The official IB MYP Mathematics subject brief identifies four equally weighted criteria. Standard Mathematics and Extended Mathematics use the same four criteria, although Extended Mathematics includes greater breadth and depth of mathematical content.
| Criterion | Official focus | What students need to demonstrate |
|---|---|---|
| A: Knowing and understanding | Selecting and applying mathematics | Accurate knowledge, appropriate methods, correct calculations, and successful problem-solving in familiar and unfamiliar situations |
| B: Investigating patterns | Exploring mathematical relationships | Recognition of patterns, development of general rules, verification, and justification |
| C: Communicating | Presenting mathematical thinking | Correct notation, suitable representations, coherent reasoning, logical organization, and clear mathematical language |
| D: Applying mathematics in real-life contexts | Using mathematics in authentic situations | Selection of relevant information, modelling, interpretation, evaluation, accuracy, and reflection on whether an answer makes sense |
These criteria measure different dimensions of mathematical performance. A student can calculate accurately under Criterion A but still need improvement in communicating the reasoning under Criterion C or interpreting the result under Criterion D.
For a more detailed student-friendly explanation, see MYP Mathematics Criteria A-D explained.
How the classroom grading mechanic works
In school-based MYP assessment, each criterion receives a final achievement level from 0 to 8. The published descriptors are organized into the bands 1-2, 3-4, 5-6, and 7-8; a level of 0 is used when the work does not reach the standard described by the first band.
Teachers make a best-fit judgment against the appropriate year-level descriptors. This is not necessarily the arithmetic mean of every score collected during the term. Teachers consider the available evidence and decide which descriptor most accurately represents the student's demonstrated achievement.
The final criterion levels are added:
Because each criterion can contribute up to 8:
The total out of 32 is then converted into a final school-reported MYP grade from 1 to 7 using the MYP boundary guidelines.
| Total criterion level | Final MYP grade |
|---|---|
| 1-5 | 1 |
| 6-9 | 2 |
| 10-14 | 3 |
| 15-18 | 4 |
| 19-23 | 5 |
| 24-27 | 6 |
| 28-32 | 7 |
A total of zero indicates that the student has not reached a standard described by the criteria. Coordinators should follow the current IB guide and their school's authorized reporting policy when handling incomplete or insufficient evidence.
Worked grading example
Suppose a student finishes a reporting period with these best-fit judgments:
| Criterion | Achievement level | Evidence summarized |
|---|---|---|
| A | 7 | Accurate methods in familiar and unfamiliar problems |
| B | 6 | Valid general rules and conclusions, but justification is not consistently complete |
| C | 6 | Clear working and notation with occasional gaps in organization |
| D | 5 | Appropriate modelling, but limited evaluation of the result |
The calculation is:
A total of 24 out of 32 corresponds to a final grade of 6 under the standard boundary guidelines. It should not be described simply as 75 percent, because MYP assessment is based on descriptors rather than a conventional percentage scale.
The example also shows why improving one criterion can change the final grade. If Criterion D increased from 5 to 6, the total would become 25, but the final grade would remain 6. If the original total had been 23, a one-level improvement would move the student from grade 5 to grade 6.
RevisionDojo's guide to MYP grade boundaries provides further explanation of the 0-8, 0-32, and 1-7 scales.
Best fit does not mean averaging every task
A common mistake is to calculate the mean of all criterion scores. For example, scores of 4, 5, and 7 do not automatically create a final Criterion A level of , rounded to 5.
The teacher instead compares the student's body of evidence with the criterion descriptors. Recent, sustained evidence may show that level 7 is the most accurate description, while inconsistent evidence might support level 6. Schools should have a clear assessment policy explaining how teachers make and standardize these judgments.
The IB requires mathematics teaching to address all four criteria, but an individual task does not need to assess all four. A skills test may emphasize A and C, an investigation may emphasize B and C, and a modelling task may emphasize C and D. Students should therefore read the task-specific rubric rather than assuming every piece of work produces four scores.
How MYP Standard Mathematics eAssessment uses the criteria
The MYP Standard Mathematics eAssessment is an externally marked on-screen examination for eligible MYP Year 5 students. According to the IB subject brief, the examination uses three broad task types.
| Examination task | Main criteria assessed |
|---|---|
| Knowing and understanding | A and C |
| Investigating patterns | B and C |
| Applying mathematics in real-life contexts | C and D |
In the current IB blueprint summary, each task carries approximately 31-35 raw marks. Criterion C is assessed across all three tasks and totals 25 marks, while the four criteria remain equally weighted overall.
This structure explains why Criterion C is not confined to a separate communication section. Mathematical notation, graphs, tables, logical working, and explanations matter throughout the examination. Students preparing for the digital assessment can use RevisionDojo's MYP eAssessment preparation advice to practise both mathematical reasoning and on-screen exam technique.
Classroom boundaries and eAssessment boundaries are different
The familiar 32-point table applies when four classroom achievement levels are combined. It should not be used to convert a raw on-screen examination mark directly into a grade.
For external eAssessment, IB examiners award raw marks using the authorized markscheme and markbands. The IB then establishes subject- and session-specific grade boundaries and reports the final result on the 1-7 scale. Those boundaries can change between examination sessions because the IB considers the demand of the paper, candidate work, examiner judgment, and statistical evidence.
Therefore, a student who earns 70 raw marks should not automatically calculate , multiply it by 32, and use the classroom table. Coordinators should consult the official results documentation for the relevant examination session. The IB's MYP grading and awards page confirms that MYP course results are reported from 1 to 7.
Criteria are not the same as mathematics branches
Students sometimes confuse the four assessment criteria with the four branches of mathematical study. The criteria describe how performance is assessed; the branches organize what mathematics may be studied and examined.
The current framework identifies numerical and abstract reasoning, thinking with models, spatial reasoning, and reasoning with data. Questions from any branch can produce evidence for more than one criterion. For example, a statistics modelling problem could assess accurate calculation under A, graphical presentation under C, and contextual interpretation under D.
How students should revise across all four criteria
Balanced preparation requires more than completing routine calculations. A practical weekly cycle is:
- Criterion A: solve mixed problems without notes and check method selection and accuracy.
- Criterion B: investigate a sequence or relationship, state a general rule, test it, and justify it.
- Criterion C: rewrite one solution using correct notation, labels, units, and a logical sequence.
- Criterion D: complete a modelling problem and explain the meaning, accuracy, assumptions, and limitations of the result.
The MYP Standard Mathematics resource hub provides a useful starting point. Students can rebuild content through Standard Mathematics Study Notes and then apply it through the MYP Standard Mathematics Questionbank.
Conclusion
MYP Standard Mathematics has four equally weighted criteria, each with a maximum classroom achievement level of 8. The resulting total out of 32 can be converted into a school-reported grade from 1 to 7, while external eAssessment uses raw marks and session-specific IB grade boundaries.
Students should prepare for all four forms of performance: accurate mathematics, investigation, communication, and real-life application. RevisionDojo's Standard Mathematics Study Notes, Questionbank, and Jojo AI can support that criteria-based practice without reducing revision to routine calculation alone.
Sources and referenced URLs
- IB MYP Mathematics subject brief
- IB MYP Mathematics curriculum overview
- IB MYP assessment overview
- IB MYP grading and awards
- RevisionDojo MYP Mathematics Criteria A-D guide
- RevisionDojo MYP grade-boundary guide
- RevisionDojo MYP eAssessment preparation advice
- RevisionDojo MYP Standard Mathematics resources
- RevisionDojo MYP Standard Mathematics Study Notes
- RevisionDojo MYP Standard Mathematics Questionbank