How to revise for exams
The most reliable way to revise is to test yourself on the material repeatedly, spread over days or weeks, and to finish with timed practice in the format of the real exam. Rereading and highlighting feel like work but mostly build familiarity, not recall.
What most advice leaves out
Revision usually goes wrong because it measures effort instead of results. Hours spent rereading notes feel productive, and the material starts to look familiar, so students assume they know it. Familiarity is not the same as being able to produce an answer from memory with the page closed, which is what an exam asks for. Self-testing is less comfortable because it shows you what you do not know, and that discomfort is exactly what makes it work.
Step by step
- 1
Map what the exam covers
List every topic from the syllabus or module guide and mark each as confident, shaky or unknown. Revise from the list, not from the order of your notes.
- 2
Turn topics into questions
For each topic, write or generate questions you could be asked. Questions give you something to test yourself with; notes only give you something to read.
- 3
Test yourself, then check
Answer from memory first, then check against your notes. Mark what you got wrong. The wrong answers are your revision list for next time.
- 4
Space it out
Come back to each topic over several days rather than doing it once for a long time. Returning just as you start to forget strengthens memory more than one long session.
- 5
Finish with exam-style practice
In the last stretch, do timed papers or mixed-question sessions in the real format, then review every mistake.
Common mistakes
- Rereading and highlighting as the main method.
- Revising favourite topics repeatedly and leaving weak ones until last.
- Leaving all practice questions until the final days, so there is no time to fix what they reveal.
Practise it with Migo AI Students
Create a study agent from your lecture notes and past questions, then use Quiz Mode for timed multiple-choice practice with explanations and a score, Flashcards for spaced recall that keeps weak cards in your next review, and Exam Simulator for a timed mixed session with a weak-topic report. Each round tells you what to revise next. All study modes are free.
Questions
How many hours a day should I revise?
There is no single right number. Several shorter, focused sessions of self-testing tend to achieve more than one very long session of reading, and leaving gaps between reviews of the same topic helps memory.
Is rewriting notes a good way to revise?
Rewriting is slow and mostly copying. Turning notes into questions and answering them from memory is a better use of the same time.
Related guides
- How to revise for an exam in one weekWith a week left, stop trying to cover everything evenly. Find the topics most likely to be examined that you know least, test yourself on them every day, and finish with at least one timed practice in the real format.
- What is active recall?Active recall is studying by retrieving information from memory, for example by answering questions with your notes closed, rather than by reading the information again. Each act of retrieval strengthens the memory and shows you what you have not learned yet.
- What is spaced repetition and how do you use it?Spaced repetition is reviewing material at increasing intervals over time, with more frequent reviews for the things you find hard and less frequent ones for the things you know. It makes memories last longer than reviewing the same amount in one block.
General study advice. Follow your own course’s guidance and your institution’s rules on assessment and AI use.