How to study the night before an exam

TutorAura guide · Updated 25 October 2026

The night before an exam is for light review, getting organised and sleeping, not for learning new topics. A short self-testing session on your key facts and mistakes is worth far more than hours of rereading, and a full night's sleep helps your brain hold on to what you studied.

Key takeaways

Review, don't learn new material.
Test yourself on key facts and past mistakes.
Pack your kit and check the time and place.
Sleep: an all-nighter costs more than it gains.

A 90-minute plan

20 minutes: flashcards for formulas, definitions, quotes or vocabulary. Use the flashcard maker if yours are digital.
20 minutes: go through your list of mistakes from practice papers. Can you now do each one?
30 minutes: a few exam-style questions on topics that come up every year.
10 minutes: blurt one high-value topic.
10 minutes: pack your bag and set two alarms.

Then stop. Screens off, wind down, bed.

Why sleep matters more than one more hour

Sleep after learning helps the brain consolidate new memories (Diekelmann and Born, 2010). Teenagers need 8 to 10 hours a night, according to a consensus statement from the American Academy of Sleep Medicine (Paruthi et al., 2016). Cutting that short the night before an exam makes it harder to concentrate and recall what you know.

Check the logistics

Exam time and room, and how long it takes to get there.
Kit: black pens, pencil, ruler, rubber, calculator (with working batteries), protractor and compasses for maths, a clear pencil case, and water if allowed.
ID or candidate number if needed. For the SAT, see what to bring to the SAT.
Breakfast plan.

If you really haven't studied

Prioritise. Pick the topics that carry the most marks and come up most often, learn the key facts and formulas for those, and do a few questions on each. Get some sleep: even a few extra hours of sleep will help more than a few extra hours of panicked reading. Next time, start earlier with a study schedule.

Managing nerves

Remind yourself that some nervousness helps you focus.
Slow breathing (breathe in for 4, out for 6) calms the body.
Avoid comparing notes with friends the night before.
More strategies in test anxiety.

The morning of the exam

Eat breakfast and drink some water.
Skim, don't study: a few minutes on your formula cards or key quotes is fine; new material is not.
Arrive early so you're not rushing, but avoid groups of anxious friends quizzing each other.
In the exam: read each question carefully, start with one you're confident about, and keep an eye on the time.

If your mind goes blank, move on to another question and come back. Blanks often clear once you've settled in.

Frequently asked questions

How do I fall asleep the night before an exam?

Stop studying an hour before bed, put your phone away, and do something calming such as reading or a shower. If you lie awake, slow breathing helps. Even rest without deep sleep is better than more revision.

What should I eat the night before an exam?

A normal, balanced meal you're used to. There's no special exam food; the main thing is not to skip meals or try something new that might upset your stomach.

Is it better to sleep or study the night before an exam?

Sleep. A short review is useful, but once it eats into your sleep it does more harm than good. Sleep helps your brain hold on to what you've learned.

Is it good to study the night before an exam?

A short, focused review is useful: test yourself on key facts and look over past mistakes. Long sessions of new learning late at night usually backfire because they cut into sleep.

Should I pull an all-nighter before an exam?

No. Sleep helps consolidate what you've learned, and missing it makes concentration and recall harder the next day.

What time should I stop studying the night before?

Aim to stop at least an hour before bed so you can wind down. Plan backwards from the time you need to get up to get 8 or more hours of sleep.

Sources

The memory function of sleep. Nature Reviews Neuroscience (Diekelmann and Born, 2010).
Recommended Amount of Sleep for Pediatric Populations. Journal of Clinical Sleep Medicine (Paruthi et al., 2016).
Test-Enhanced Learning: Taking Memory Tests Improves Long-Term Retention. Psychological Science (Roediger and Karpicke, 2006).

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