Spaced Repetition: How to Schedule Review Before an Exam
Reading the same chapter five times in one evening can create
familiarity, but familiarity is not the same as being able to retrieve
an idea a week later. Spaced repetition means returning to information
across separate sessions and attempting to recall it before looking at
the answer.
Learning research supports distributed review over massed practice,
although the best interval varies with the material, the learner, and
the date of the final test. You do not need a magical sequence of
numbers. You need a simple cycle that reveals what you can actually
remember.
A fourteen-day example
Immediately after a lesson, write five short questions. Review them
the next day, three days later, seven days later, and two days before
the exam. If you miss an item, bring its next review closer. If you
answer it easily several times, increase the interval.
For each session:
- Close the book.
- Answer from memory, aloud or in writing.
- Check the original source.
- Correct the answer in a few words.
- Set the next review date.
Flashcards work well for terms, rules, and focused questions. They
are not a complete method for essays, analysis, or complex
problem-solving. Add practice that resembles the assessment: solve a
full problem, explain a process, or compare two concepts. Keep each card
focused on one clear prompt rather than copying an entire page.
Common mistakes
- Reviewing every item at the same frequency.
- Revealing the answer before making a genuine retrieval attempt.
- Memorising a sentence without understanding or applying it.
- Creating hundreds of cards and then abandoning the system.
- Sacrificing sleep during the final night.
Begin with only twenty high-value questions. Sort them into “know,”
“uncertain,” and “do not know.” Review the last group tomorrow, the
uncertain group shortly after, and the known group later. Once a week,
delete poor cards and rewrite vague prompts.
Spaced repetition is not a particular app. It is a principle: genuine
retrieval, a time gap, and another retrieval attempt. Combined with
understanding, sufficient sleep, and exam-like practice, it builds
knowledge you can use rather than a temporary sense that the page looks
familiar.
If only one week remains
Divide the material into small units and rank them by importance and
weakness. On day one, test yourself to establish a baseline. In the
following sessions, combine some older material with one new portion,
and do not postpone difficult questions until the final night. Two days
before the exam, attempt a short timed test and review the errors. Use
the last evening for light consolidation and sleep. This schedule
guarantees no particular grade, but it prevents equal time being spent
on knowledge you already possess and material you still cannot
retrieve.
Sources: PubMed: Distributed
Practice Review, PubMed: Spaced
Retrieval and Long-Term Retention.