IB SEHS IA Grader

Grade your SEHS IA before you submit. Upload your draft and get a mark for each criterion, comments tied to your sentences, and a list of what to fix first.

Grade my IASee what you get

5 free gradings a month. No card. Private to you.

SEHS IA mark and criterion feedback in Marksy
of marks within one grade of the IB's final mark
92%
marking score. ChatGPT 65, Claude 61, Gemini 57
74/100
real IAs and TOK essays tested against the mark the IB gave
1,317
See how we testedMarksy vs ChatGPT, Claude and Gemini
Marks
24, from four criteria worth 6 each
Length
3,200 words at most
First assessed
2026
New in the conclusion
What your findings mean for health or performance

See the mark, and the sentences behind it

Check the quality of your method, analysis, evaluation, communication and subject-specific reasoning. Find the weakest parts of the draft and see what to change first.

SEHS IA: comments on your writing
Comments on your writingEach comment points at a passage in your draft, so you can see why Marksy said it.
SEHS IA: what to fix first
What to fix firstA short list of edits in order, instead of changing random parts of the draft.

What Marksy checks for each SEHS IA criterion

You get a mark for each IB assessment criterion below. The points under each one are what Marksy looks for in your draft. See the mark bands

Criterion A: Research design

6 marks
  • The research question is focused and placed in a specific scientific context.
  • Method choices (variables, controls, range, repeats, data sufficiency) are explained, not just listed.
  • The procedure has enough detail for another student to reproduce it.

Criterion B: Data analysis

6 marks
  • Raw and processed data are traceable, with units and uncertainties.
  • Calculations, graphs, and any statistics are correct and fit the research question.
  • Uncertainties are propagated or discussed where they matter.

Criterion C: Conclusion

6 marks
  • The answer to the research question is explicit and backed by your processed data.
  • The claim is no stronger than the evidence allows.
  • The result is compared with published values, theory, or other studies.
  • Explain what the findings could mean for health or performance.

Criterion D: Evaluation

6 marks
  • Weaknesses are specific to this investigation, not generic.
  • The report explains how much each weakness affected the results.
  • Improvements are realistic and target the weaknesses you identified.

Where SEHS IAs usually lose marks

Marksy flags these in your draft and links each one to the sentences it is about.

  • A question with no system or theory"Does stretching help performance?" is too open. Name who you test, the stretch, the performance test, and the physiology that predicts your result.Criterion A
  • Participants left uncontrolledPeople differ in fitness, sleep, food and effort. Say how you kept these alike, such as the same warm-up and time of day, and how you avoided a practice effect between trials.Criterion A
  • Uncertainty only from the stopwatchA stopwatch reads to 0.01 s, but your reaction time is far bigger than that. Use the spread across trials and participants, such as standard deviation, when you compare results.Criterion B
  • No practical implicationsThe 2026 criteria ask what your findings mean for health or performance. Say what a coach, athlete or patient could do differently, but only as far as your data allows.Criterion C
  • No comparison with published researchCompare your results with published studies or fitness norms, and cite them so a reader can find them. Say why your result agrees with them or doesn't.Criterion C
  • Weaknesses with no rankingSay which weakness affected your results most, such as uneven effort in a maximal test, and explain why. Then give a realistic fix for that one.Criterion D

Before you upload

  • Include raw data for each participant, with names removed, not only group averages.
  • Say how you chose participants and how you got their consent.
  • Name what you measured with (stopwatch, heart rate monitor, app) and its precision.
  • Cite the studies or norms you compare your results with.

Your draft stays at the centre

Marksy reads the work you upload, points each comment back to your writing, and puts the most important changes first.

Can your method produce enough accurate data to answer the question without overcomplicating the investigation?
Read Sports, Exercise and Health Science IA Planning Guide
  1. 1

    Upload your draft

    A PDF of your SEHS IA, finished or not. Every comment stays connected to your own writing.

  2. 2

    Read the comments

    Highlights show which passage each comment is about.

  3. 3

    Fix the important parts first

    Work down a short list instead of making scattered edits.

  4. 4

    Keep the final say

    Accept, adapt or ignore each suggestion. You stay the author.

What students wrote afterwards

From Trustpilot, as written.

marksyib has saved my ib diploma. thanks to it, my IA's were perfect and got the points i needed. really recommended.
maya balog, 13 February 2026
Marksy ib allowed me to be able to finish my IAs much before allowing me to be able to relax better. 100% recommended
Jordi Pasalaigua Peiron, 25 March 2026
Read the reviews on Trustpilot

Your work stays your work

Marksy reads the draft you upload and comments on it. It doesn't rewrite your assessment, and your files are never used to train AI.

Read the safety answers
  • Private to youOnly you can see your work unless you choose to share it.
  • Never used for trainingYour coursework is not added to any AI training data.
  • Feedback, not ghostwritingUse the report to improve your own analysis and decisions.
  • Delete it whenever you wantYou control the files stored in your account.

Questions before you upload

Still planning? The coursework guide covers the criteria and what to ask yourself while you write. Open the guide

Yes. Marksy grades against the criteria first assessed in 2026: research design, data analysis, conclusion and evaluation, 24 marks, up to 3,200 words. That includes the new practical implications in the conclusion.

How your findings could be used in real life for health or performance. For example, what your result suggests about a warm-up routine or a training plan. Keep it to what your data actually shows.

Yes. The criteria allow data from databases or models. Explain which source you used, how you chose the data from it, and why it is enough to answer your question.

Not by itself. Say how many there were, how you chose them and how alike they are. A small group of similar students limits who your conclusion applies to, so say that in your evaluation.

We tested Marksy on 1,317 real IAs and TOK essays with the mark the IB gave them. 92% of Marksy's marks landed within one grade. On a set with as many weak as strong essays, it scored 74/100 on our marking score, against 65 for ChatGPT, 61 for Claude and 57 for Gemini. Every number, and how we tested, is on the grading accuracy page.

Yes. Marksy checks your Sports, Exercise and Health Science IA against the IB assessment criteria for it and returns marks, comments and fixes instead of generic essay advice.

Yes. Early drafts are useful because the report can show a weak criterion before you spend hours polishing the wrong section. You can revise and grade another version later.

A free account includes 5 gradings a month. You don't need a card.

No. Marksy reads your existing work, explains each comment, and suggests what to revise. The writing and the final decisions stay yours.

Your upload is private to your account, is not used to train AI models, and can be deleted whenever you want.

Stop guessing what to fix in your SEHS IA

Upload the version you have now and find the parts holding it back.

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