Mapped to official IB rubrics · Built by IB students.
Know exactly what to fix before you submit.
Examiner-style feedback on every rubric criterion. Private, instant, free.
Current draft estimate
28/ 42
Revision potential
35/ 42
+7 points
Criterion snapshot
Highest-leverage fix
Carry the uncertainty in your measurements through into the interpretation, not just the results table.
Next revision move
Revise your evaluation, then re-run the report to confirm the gain.
Practice estimate only — not an official IB grade.
Independent practice tool · Not affiliated with the IBO
We read this
so you don't have to
25
IB subjects covered
3
free reviews to start
0
drafts ever stored
Built for both sides of the desk
Upload your draft
Drop a PDF or paste plain text — any IB subject, any year.
Get criterion scores
Every rubric dimension scored and annotated — the same lens your examiner uses.
Fix the highest-leverage issues
Ranked by point impact — so you know exactly where to spend your revision time.
Submit with confidence
Know your score band before your teacher reads a single page.
Private by design
Your IA is never stored. Used only to generate your feedback, then discarded.
Built for IB students by IB students

Frequently asked questions
No. ibacalao is an independent practice tool and is not affiliated with or endorsed by the International Baccalaureate Organization (IBO). Feedback is mapped to rubric-style criteria for revision purposes only.
No. ibacalao only gives feedback and revision guidance on a draft you have already written. The thinking, writing and final decisions stay with you.
Yes. We do not store your IA, we never use it to train AI models, and it is used only to generate your feedback. IP addresses are hashed and deleted within 48 hours.
No tool can guarantee a grade. ibacalao gives you a practice score estimate and concrete suggestions so you can revise with a clearer picture before you submit.
You get 3 free reviews — no payment required. The first is instant; enter your email to unlock the remaining two.
Most IB Diploma subjects across the sciences, humanities, languages and the arts, at both SL and HL. Pick your subject above to see its exact criteria.
Ready to improve your IA?
Upload your draft and get clear, rubric-based feedback before your next revision.
3 free reviews · Private by design · Independent practice tool · Not affiliated with the IBO