AI marking for your IGCSE past paper, by the mark scheme.
Upload a Cambridge past paper you've done and get it back marked the way Cambridge marks: by that paper's official mark scheme and Cambridge's marking rules. Your score, every lost mark explained on your own script, and the mistakes you keep making. AS and A Level papers too.
PDF · up to 40 MB · past papers 2015 to June 2026
(a)A car of mass 1200 kg accelerates from rest to 18 m/s in 6.0 s. Calculate the resultant force. [3]
a = 18 ÷ 6 = 3 m/s²; F = ma = 1200 × 3 = 3600
(b)State the useful energy change as the car speeds up. [1]
chemical → kinetic
(c)Explain why the car reaches a top speed. [2]
air resistance gets bigger as it goes faster
- 3600 N: unit needed
- …until it equals the driving force, so no resultant force
How it works
What do I need to do?
- 1
Upload your answers
Scan the paper you've done into one PDF, up to 40 MB. Your phone's scanner or notes app is enough.
- 2
We find the paper
We recognise it from its footer or its questions, then pull that exact paper's official mark scheme. You can also pick it yourself.
- 3
It's marked, part by part
Each question is marked against the scheme, using Cambridge's marking rules, as you watch. Marks appear on your script as each question finishes.
What do I get back?
More than a score. A number tells you how you did; the marking tells you where the marks went, so the next paper goes better.
Your score, question by question
The total, and how every question and part went.
Marks on your own script
Ticks and crosses where you wrote the answer, not in a separate report.
Why each mark was lost
Every lost mark says what the mark scheme wanted instead.
The mistakes you repeat
Lost marks grouped into patterns such as missing units, with how many marks each cost.
What to revise next
Results update your topic confidence, so the planner knows which chapters need work.
A link for your teacher
Share a view-only copy of the marking. Nobody else sees your script unless you do.
How is my paper marked?
The way a Cambridge examiner would mark it. The AI reads your answers, but Cambridge's mark scheme and marking rules decide every mark.
That paper's own mark scheme
The published Cambridge scheme for that exact paper and series, copied word for word. It decides every mark, not the AI's opinion of the subject.
Cambridge's marking principles
The general instructions printed at the front of each scheme apply to every question, just as they do for Cambridge's own examiners.
Method, accuracy and B marks
M, A and B marks are given as the scheme sets them out. An accuracy mark that depends on a method mark needs that method first.
Error carried forward
Where the scheme allows follow-through, a wrong answer from an earlier part still earns later marks if you use it correctly.
Marked positively
You get credit for what you wrote. Marks aren't taken off for mistakes, unless they contradict the right answer.
Crossed-out work
Ignored when you've replaced it, and marked when it's your only attempt, the way an examiner treats it.
Which papers can it mark?
Question papers and mark schemes from 2015 to June 2026, for over 100 IGCSE syllabuses and nearly 80 AS & A Level ones. Multiple-choice and written papers. These are the subjects the rest of CIE Buddy is built around:
- 0417 IGCSE Information and Communication Technology
- 0450 IGCSE Business Studies
- 0452 IGCSE Accounting
- 0455 IGCSE Economics
- 0580 IGCSE Mathematics
- 0610 IGCSE Biology
- 0620 IGCSE Chemistry
- 0625 IGCSE Physics
- 9609 AS & A Level Business
- 9618 AS & A Level Computer Science
- 9626 AS & A Level Information Technology
- 9700 AS & A Level Biology
- 9701 AS & A Level Chemistry
- 9702 AS & A Level Physics
- 9706 AS & A Level Accounting
- 9708 AS & A Level Economics
- 9709 AS & A Level Mathematics
- 9990 AS & A Level Psychology
Each links to that subject's mark schemes, paper by paper. All mark schemes
Is it an official Cambridge mark?
No. It's marked by Cambridge's mark scheme and rules, but CIE Buddy is independent, not Cambridge, so treat the score as a close guide rather than an official grade. It can misread handwriting, or miss a method the scheme would accept. When it isn't sure about a mark it says so, so you know which questions to check yourself.
How do I get the best marking?
- Scan every page, in order, into one PDF.
- Keep the page footers in: that's how the paper is recognised.
- Write in dark pen, and keep working inside the answer space.
- Upload one paper at a time.
Past paper marking questions
Can AI mark my IGCSE past paper?
Yes. Upload a PDF of a Cambridge past paper you've answered and CIE Buddy marks each question part against that paper's official mark scheme, following Cambridge's marking rules. The marks are drawn on your own script, and every lost mark says what the scheme wanted instead.
Can I check my IGCSE paper against the mark scheme with AI?
Yes. Instead of reading the mark scheme yourself and guessing which points you earned, upload your answers and the AI checks each one against that paper's mark scheme, point by point, and shows you which marking points you got and which you missed.
Where can I find IGCSE mark schemes?
CIE Buddy lists every Cambridge IGCSE, AS and A Level mark scheme from 2019 on for the subjects it covers, by subject, series and paper, with the question paper beside each one. Each paper's page also lets you get your answers marked against it.
Is the marking based on Cambridge's mark schemes?
Yes. Every paper is marked against Cambridge's published mark scheme for that exact paper, not an answer the AI makes up. It also follows Cambridge's marking rules: the general marking principles at the front of each scheme, method and accuracy marks, error carried forward where the scheme allows it, and positive marking.
Is it an official Cambridge mark?
No. The marking uses Cambridge's mark schemes and rules, but CIE Buddy is independent and isn't connected to Cambridge, so your score is a guide to how the paper would be marked, not an official grade.
How do I get my past paper marked?
Scan your answers into one PDF, up to 40 MB, and upload it. CIE Buddy recognises the paper from its footer or its questions (or you pick it), finds the mark scheme, and marks it question by question while you watch.
Which IGCSE past papers can it mark?
Its paper bank has question papers and mark schemes from 2015 to June 2026 for over 100 IGCSE syllabuses and nearly 80 AS & A Level ones, including Maths, Physics, Chemistry, Biology, Economics, Business and Accounting. It marks multiple-choice and written papers.
Can it mark AS and A Level past papers?
Yes. It marks AS and A Level papers too, for example 9702 Physics, 9701 Chemistry and 9709 Mathematics.
How accurate is AI marking?
It follows the official Cambridge mark scheme point by point, but it's a guide, not an official grade. It can misread handwriting or miss an unusual method that an examiner would accept. Questions it isn't sure about are flagged, so check those against the scheme.
Can it read handwritten answers?
Yes. A clear scan of a handwritten script works. Write in dark pen inside the answer spaces, keep every page in order with its footer, and it reads your answers as they are on the page.
Is it free to get a past paper marked?
Everything is free until 14 November. After that the free plan marks 2 past papers a week, and the paid plan has no limit. AS and A Level are free right now.
Who can see my marked paper?
Only you. If you make a share link, anyone with that link can view the marking without signing in, and shared markings are kept out of search engines.
See where your marks went.
Make an account with your email or Google, upload a paper you've done, and see what the mark scheme gives you.
Join for free