Learn the Mark Scheme.
Earn Every Mark.
Most students lose marks not because they lack knowledge, but because they do not know how examiners award them. Examo teaches you the exact mark scheme patterns, then tests you with AI marking that checks your answer point by point, the same way a real examiner would.
Live demo · AI mark-by-mark breakdown
● liveQuestion
Explain why isotopes of the same element have the same chemical properties. [2]
Your Answer
AI Marking
Marked like a real examiner, instantly
When you submit an answer, our AI examiner reads your full response and marks each mark scheme point individually. It understands meaning, not just keyword matches. For every mark you miss, it tells you exactly what was wrong and how to fix it.
Point-by-point breakdown
Every mark scheme point marked individually with ✓, ✗, or BOD notation
Specific feedback per mark
Explains precisely why each mark was awarded or withheld
Targeted improvement tips
Tells you exactly how to rewrite your answer to earn the mark, shown only when marks are lost
Topic Frequency Data
Know exactly what to revise first
Every topic is scored by how frequently it appears across IGCSE past papers from 2018 to 2024. High-frequency topics appear on almost every paper, so revise those first to maximise your marks.
Sample · Highest-frequency topics
FAQ
Frequently Asked Questions
What is Examo?
Most revision resources teach you content. Examo focuses on the mark scheme, the exact language and structure examiners use to award marks. By practising high-frequency topics first (those that appear on almost every past paper), students can add around 15% to their grade in just a few hours of focused practice. It is the fastest route to marks because it targets the questions most likely to appear and trains you to answer them the way examiners expect.
How does the AI marking work?
Your answer is marked by an AI examiner (Llama 3.3 70B) trained on the official IGCSE mark schemes. Unlike simple keyword matching, it understands meaning. It reads your full answer and awards each mark scheme point individually. For every point you miss, it explains exactly what was wrong and how to phrase your answer to earn the mark next time. For borderline answers, we always recommend cross-referencing the mark scheme directly.
Which subjects and exam boards are supported?
Edexcel IGCSE Chemistry (4CH1), Physics (4PH1), and Biology (4BI1), CIE IGCSE Computer Science (0984/0478), and CIE IGCSE Economics (0455) are fully supported, with questions sourced from past papers up to 2024.
Is Examo free to use?
Yes. Examo is free to sign up and use. All topics, practice questions, and automatic marking are available at no cost.
Learn more
Curious how Examo works?
Learn about the method, the features, and the thinking behind mark-scheme-first revision.