IB IA Grader
Upload your Internal Assessment draft. Get a mark for each IB criterion, comments tied to your sentences, and a list of what to fix first.
5 free gradings a month. No card. Private to you.
- 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
Choose your IA subject
Every subject has its own IB criteria. Pick yours to see what Marksy checks.
Sciences
Maths
Individuals and societies
- Economics IA grader45 marks, 3 commentaries
- History IA grader25 marks
- Geography IA grader25 marks
- Psychology IA grader24 marks
- Global Politics IA graderSL 24 / HL 30 marks
- Business Management IA grader25 marks
- Philosophy IA grader25 marks
- World Religions IA grader30 marks
- Social and Cultural Anthropology graderSL 26 / HL 33 marks
How your IA is marked
- Your teacher marks it firstYour teacher marks your final IA against your subject's IB criteria.
- The IB checks a sampleThe IB re-marks a sample of IAs from each school. If your teacher marked too high or too low, the marks for the whole class can move.
- Each subject has its own criteriaBiology, Chemistry and Physics use four criteria worth 24 marks. Maths uses five criteria worth 20. Other subjects have their own mix. Marksy marks against the criteria for your subject.
What you get back
Marksy reads the draft you upload and marks it against the IB criteria for your subject.
- A mark for each criterionSee which criterion is holding your mark back.
- Comments on your sentencesEach comment points at the passage it is about.
- What to fix firstA short list of edits in order of how much they matter.
- Your work stays yoursPrivate to you and never used to train AI.
Questions before you upload
Read the safety answersYes. A free Marksy account includes 5 gradings a month, for any subject. You don't need a card.
Every subject listed on this page, including Biology, Chemistry, Physics, Maths AA and AI, Economics, History, Psychology and Business Management. Each one is marked against its own IB criteria.
Yes. An early draft shows which criterion is weakest before you spend hours polishing the wrong section. Grade it again after you revise.
With ChatGPT you paste in the criteria yourself and then guess what it missed. Marksy already has your subject's IB criteria and gives you a mark for each one, comments tied to your sentences and a list of fixes. When we pasted the criteria and 226 real IAs and TOK essays into ChatGPT, its marks were 18% further from the IB's than Marksy's.
No. Marksy comments on the draft you upload and suggests what to revise. The writing and the changes stay yours.
Yes. Your file is private to your account, is never used to train AI, and can be deleted whenever you want.
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.
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