How to Revise for Exams: Active Recall, Spaced Repetition & More

Re-reading feels productive because the material looks familiar, but familiarity is not the same as being able to recall it in an exam. In the exam hall there is no book in front of you, so you need to practise pulling information out of your memory.

Learning research consistently finds that retrieval practice (testing yourself) and spacing (reviewing over several days) lead to much better long-term memory than re-reading or highlighting. The methods below put both ideas into practice.

Active recall means answering questions from memory before you look at the answer. Every time you successfully recall something, you strengthen the memory.

1. 1Turn each heading in your notes into a question, for example "What are the functions of the RBI?" instead of "Functions of RBI".
2. 2Cover the answer and say or write everything you remember.
3. 3Check your notes and mark what you missed in a different colour.
4. 4Revisit the missed points first in your next session.

The blurting method

Read a topic once, close the book, and on a blank page write down everything you can remember in five to ten minutes. Then compare with your notes and fill the gaps in another colour. The gaps show exactly what to revise next.

Spaced repetition means reviewing a topic at increasing intervals, just before you would forget it. Instead of revising a chapter five times in one day, revise it five times across a month.

Write review dates beside each chapter in your planner so you never have to wonder what to revise today. Flashcard apps can also schedule reviews for you automatically.

Previous years' papers are the most exam-like form of active recall. They show what is asked, how deep you need to go and how fast you need to be.

• Start with topic-wise questions right after finishing a chapter.
• Move to full papers in the last month and attempt them in the real time limit.
• After each paper, list every mistake and its reason: concept gap, careless error or time pressure.
• Revise the concepts behind those mistakes before the next paper.

• Interleaving: mix different topics or question types in one session (for example algebra, geometry and statistics) instead of doing one type for hours. It trains you to choose the right method, as you must in the exam.
• The Feynman technique: explain a topic in simple words, as if teaching a younger student. Wherever you get stuck, you have found a gap.
• Mind maps: draw a topic in the middle of a page and branch out to sub-topics from memory. Good for connected subjects like Biology and History.
• One-page summaries: squeeze each chapter onto a single page of key points. These are perfect for the final week.

Our guide on how to make study notes shows how to build notes that are easy to revise with these methods.

1. 1List every subject and chapter, and mark each as strong, average or weak.
2. 2Count the days left and give more slots to weak chapters, but keep touching strong ones.
3. 3Plan two or three subjects a day so you do not get bored, and mix hard and easy topics.
4. 4Use focused blocks of 25 to 50 minutes with short breaks, for example with the Pomodoro technique.
5. 5Keep one day a week lighter for catching up and taking a full practice paper.

• Revise from your one-page summaries, formula sheets and mistake list, not from full textbooks.
• Take one or two full timed papers and review them carefully.
• Avoid starting big new topics; strengthen what you already know.
• Sleep seven to eight hours. Sleep helps your brain store what you studied.
• The night before, do a light review and prepare your admit card, ID and stationery.