RevisionPrep FAQ
How Is MYP Chemistry Graded From the Criteria to a 1–7?
Answered by RevisionPrep's IB Educators
MYP Chemistry is graded on four criteria, A–D, each scored out of 8, then summed out of 32 and converted to a 1–7 grade using your school's grade boundaries. There's no single 'chemistry exam' driving the grade — it's built task by task across the two years.
The criteria and the conversion
How is MYP Chemistry graded from the criteria to a 1–7?
MYP Chemistry uses four criteria — A (Knowing and Understanding), B (Inquiring and Designing), C (Processing and Evaluating), D (Reflecting on Impacts) — each marked out of 8 using task-specific rubrics. Your school adds the four criterion levels (max 32) and maps that total to a 1–7 grade using the IB's published grade boundary table.
Worked example: if you score 6 on A, 5 on B, 6 on C and 5 on D, your total is 22/32. Using a typical boundary table, 22/32 often lands around grade 5–6, but boundaries are set per school per year, not fixed across the IB. Quick tip: ask your teacher for the exact boundary table they're using this session — schools sometimes adjust it slightly year to year.
What do criteria A, B, C and D actually assess in chemistry?
Criterion A tests recall and application of chemical concepts (like moles, bonding, reaction types). B assesses your ability to design a testable investigation. C judges how you process data, calculate uncertainty and evaluate method validity. D asks you to reflect on chemistry's impact on society or environment — often through research-based tasks.
Common mistake: students write strong data tables for Criterion C but forget to discuss limitations or suggest realistic improvements — that's usually where marks are lost, not in the calculations themselves.
Do all four criteria have to be assessed every year?
Yes — according to the MYP: From Principles into Practice guide, all four criteria must be assessed at least twice over the two-year MYP 4-5 cycle, using at least two separate tasks per criterion. Your final grade reflects the best-fit level across that evidence, not just your last test.
That's why one bad lab report rarely tanks your grade — teachers use 'best-fit' judgement across multiple pieces of evidence per criterion, not a strict average.
How are the four criterion scores combined into one number?
Each criterion is scored 0–8, so the maximum possible total is 32. Your teacher adds the four best-fit criterion levels together, then converts that raw total into a 1–7 grade using a boundary conversion table — the same process used across all MYP subject groups, not just sciences.
| Total (out of 32) | Typical MYP grade |
|---|---|
| 1–5 | 1 |
| 6–9 | 2 |
| 10–14 | 3 |
| 15–18 | 4 |
| 19–23 | 5 |
| 24–27 | 6 |
| 28–32 | 7 |
These are illustrative boundaries — your school's actual table may vary slightly, since the IB allows some local calibration.
Getting a 6 or 7
What's the difference between a 6 and a 7 in MYP Chemistry?
A 7 usually needs consistent 7–8 level performance across most criteria, not just one strong task. The real gap between 6 and 7 is usually in Criterion C and D — top answers evaluate method validity critically and link chemistry to real, specific global contexts rather than generic statements.
I've marked hundreds of Criterion D reflections, and the ones that hit level 7–8 always name a real context — a specific industrial process, a named environmental event — rather than writing 'chemistry affects the environment.' Specificity is the single biggest lever for that top band.
How can I improve my MYP Chemistry grade before the next report?
Target your weakest criterion first — check your last three assessed tasks and see which criterion consistently scores lowest. Most students underperform on Criterion B (designing a fair, controlled investigation) or D (evaluating impacts), not on content recall, so that's usually the fastest place to gain a grade band.
3 things to check before your next assessed task:
- Does your hypothesis link a specific independent and dependent variable, not just 'temperature affects rate'?
- Have you named at least one controlled variable and how you'll keep it constant?
- In your conclusion, have you commented on reliability (repeats, anomalies) as well as accuracy?
Does MYP Chemistry grading affect my IB Diploma predicted grades?
Not directly — MYP grades and DP grades are separate assessment systems with different criteria entirely. But strong MYP Chemistry habits (clear data processing, careful evaluation writing) transfer straight into DP Chemistry's internal assessment and paper 3 data-based questions, so the skills carry forward even though the grades don't.
Think of MYP 4-5 as the training ground for the exact skills DP examiners reward in the Chemistry internal assessment — data processing, uncertainty analysis and evaluation are assessed almost identically in spirit.
Comparisons & context (for parents)
Is MYP Chemistry graded the same way as MYP Biology or Physics?
Yes — every MYP science subject (Biology, Chemistry, Physics) uses the identical four criteria (A–D) and the same 1–7 conversion process, because they all sit under the single MYP Sciences subject group guide. The content differs; the assessment structure and grading logic don't.
That consistency is useful for parents comparing report cards across siblings or subjects — a 6 in Chemistry represents the same rigour of evidence as a 6 in Biology, just applied to different content.
How does MYP grading compare to GCSE or national curriculum grading?
MYP grading (1–7, criterion-based, coursework-driven) is quite different from GCSE's exam-heavy 9–1 system. MYP relies on ongoing task evidence across two years rather than one terminal exam series, so a single bad week won't sink your child's grade the way a mock GCSE exam might.
| Feature | MYP 4-5 | GCSE |
|---|---|---|
| Grading scale | 1–7 | 9–1 |
| Basis | Criteria A–D, best-fit | Mostly terminal exams |
| Coursework weight | High (ongoing tasks) | Low/none in most subjects |
| Assessed skills | Inquiry, evaluation, reflection | Content recall, exam technique |
What grade boundaries does the IB actually use for MYP 1–7?
The IB publishes grade descriptors (not fixed numeric boundaries) describing what a 'typical' student at each of the 1–7 levels can do — schools then set their own numeric boundary tables consistent with those descriptors. This is why boundaries can vary slightly between schools, even for the same criterion total.
According to IB guidance in the MYP: From Principles into Practice document, schools calibrate boundaries through moderation meetings each year — it isn't a single global number the way DP grade boundaries are published after each exam session.
Are MYP grades important for university applications?
MYP 4-5 grades themselves aren't submitted to universities — it's the later DP Diploma score that matters for admissions. But MYP Chemistry grades matter practically: they're usually the basis your school uses to recommend (or advise against) DP Chemistry at HL, so a weak MYP grade is worth addressing early, not ignoring.
Quick tip for parents: if your child is sitting around a 4 in MYP Chemistry going into DP subject selection, that's a good moment to ask the teacher directly whether HL Chemistry is realistic, rather than assuming SL is the safe default.
Resources & next steps
What resources actually help raise a MYP Chemistry criterion score?
Practising against real criterion rubrics beats generic revision — you want past task exemplars for Criterion B (investigation design) and C (data evaluation) specifically, since those are where most marks are lost. Working through topical worksheets by unit, rather than random past questions, builds the pattern recognition examiners reward.
On revisionprep.com you'll find MYP Chemistry Revision Notes organised by unit, alongside Topical Worksheets that isolate Criterion B and C-style tasks — useful if you want targeted practice rather than a full past paper.
MYP Chemistry: Criterion Total to 1–7 Grade (illustrative)
| Total (out of 32) | Typical MYP grade |
| 1–5 | 1 |
| 6–9 | 2 |
| 10–14 | 3 |
| 15–18 | 4 |
| 19–23 | 5 |
| 24–27 | 6 |
| 28–32 | 7 |
For unit-by-unit Revision Notes and Topical Worksheets built around MYP Chemistry's actual criteria, explore the MYP Chemistry hub on revisionprep.com.
