Most students lose marks not because they don't know the content — but because they don't write answers the way mark schemes want. This tool fixes that.
Decode
See exactly what each question type requires — mark points, level descriptors, key phrases.
Practice
Write your answer, then self-mark against the real mark points with a click-to-check checklist.
Improve
Spot the gaps between what you wrote and what earns marks — then close them.
Biology
Cambridge IGCSE
Open decoder →Chemistry
Cambridge IGCSE
Open decoder →Physics
Cambridge IGCSE
Open decoder →Mathematics
Cambridge IGCSE
Open decoder →English Language
Cambridge IGCSE
Open decoder →A mark scheme decoder breaks down what examiners actually award marks for in each question type — showing you the exact mark points, phrases that earn marks, and common mistakes that lose them.
Real mark schemes are compressed and written for examiners. This tool translates them into plain language with examples, a practice mode, and a self-marking checklist so students can actively apply the principles.
Currently Cambridge IGCSE: Biology (0610), Chemistry (0620), Physics (0625), Mathematics (0580) and English Language (0500). More subjects and boards are being added regularly.
Select a question type, read the mark scheme guidance, then click Practice to write your own answer. After writing, mark yourself against the official mark points and see your score.
Yes — completely free, no sign-up required.
Our specialist tutors can work through mark scheme technique with your child in real time.
Pair this formula sheet with past papers, revision checklists, and planners — all free on our study tools hub.