This is the highest-leverage habit in test preparation and the one most often skipped, because it is slower and less satisfying than taking another test.
Budget longer for the review than the test took. That ratio sounds wrong and is correct.
Sort every miss into one of four categories
Do not just read the explanation and nod. For each question you got wrong, write down which of these it was. The category determines what you do next, and they need completely different responses.
- Content. You did not know the rule, the formula or the method. This is the good kind: it is a specific thing to go and learn.
- Careless. You knew it and misread the question, solved for the wrong variable, or mis-clicked. Look for the pattern, because most students have one or two recurring careless modes rather than random noise.
- Pace. You would have got it with another thirty seconds. This is a pacing problem, and studying content will not fix it.
- Guess. You had no route in at all. Note whether it was a topic you have simply never covered.
Review the ones you got right
Specifically the ones you were unsure about, or guessed and happened to land. Those are the questions about to become wrong answers on a worse day, and they are invisible if you only look at your mistakes.
A quick marking system while you take the test makes this possible: a dot next to anything you are not certain of. It costs a second and it makes the review twice as useful.
Redo before you read
For each miss, try the question again before looking at the explanation. Two things come out of that:
- If you get it right on the second attempt with no time pressure, it was pace or carelessness, not content. That is a completely different diagnosis.
- If you still cannot do it, you now know exactly where your reasoning stops, which makes the explanation far more useful when you do read it.
Keep an error log
One line per miss: the question type, the category, and one sentence on what went wrong. A spreadsheet or a notebook, it does not matter.
Its value is cumulative. After three tests you will see the same three or four failure modes repeating, and those become your study list. Nobody predicts their own patterns accurately; the log does it for you.
Re-drill the log, not fresh questions
In the last stretch before your test, questions you have already got wrong are worth more than new ones. They are the ones you have demonstrated you cannot do yet.
Fresh questions feel more productive because most of them go well. That feeling is the problem.
A realistic review session
- Score it and stop. Do not analyze yet.
- Redo every miss cold, untimed, no explanations.
- Now read the explanations, including for the ones you fixed.
- Categorise every miss and add it to the log.
- Write down the top two patterns and what you will do about them this week.
That is roughly two to three hours after a full-length test. It is the most valuable block of time in the whole plan.