Learn · 30 October 2026 · 6 min read

How to use free practice tests well: exam mode, practice mode and review

Get more from free practice tests: when to use exam mode or practice mode, how to review mistakes, how to space your tests, and when you are ready.

Free practice tests are one of the best study tools available, but only if you use them well. Many people take test after test, glance at the score and move on. Their scores rise slowly, then stall. Others take fewer tests, review each one carefully and improve much faster.

This guide explains how to get the most from every practice test, whichever exam you are preparing for: when to use exam mode and when to use practice mode, how to review your mistakes, and how to space your tests so the learning lasts.

Two modes, two purposes

Every test on Fable Tests can be taken in two ways.

Neither mode is better. They do different jobs, and a good study plan uses both.

When to use practice mode

Use practice mode when your goal is learning:

• early in your preparation, when much of the material is new;
• when you are working on a weak topic;
• when you want to read each explanation while the question is fresh.

In practice mode, try to commit to an answer before you check it. Even a guess, made properly, forces you to retrieve what you know, and that act of recall is what strengthens memory. Our note on practice tests and active recall explains why.

When to use exam mode

Use exam mode when your goal is measuring:

• at the very start, as a baseline to see where you stand;
• regularly through your preparation, to track progress;
• in the final weeks, to rehearse the real test.

Exam mode shows things practice mode cannot: whether you can finish in time, whether your concentration holds to the end, and how you perform without hints. Treat it seriously. Sit somewhere quiet, put your phone away and do not pause.

A simple rule

• Learning phase: mostly practice mode, with an exam-mode test about once a week.
• Final phase: mostly exam mode, with practice mode only for topics that are still weak.

The review is where you improve

Taking a test shows you what you know. Reviewing it is what changes what you know. As a rough guide, spend at least as long reviewing a test as you spent taking it.

How to review a test

Go through every question you got wrong, and every question you got right by guessing:

1. Read the explanation, not just the correct answer.
2. Find the underlying fact or skill. For a knowledge test, find the fact in your study notes. For a skills test, work out which step went wrong.
3. Write it down in your own words in a running list of mistakes.
4. Name the cause. Was it:

• a gap: you did not know it;
• a mix-up: you confused two similar facts;
• a misread: you missed a word such as "not" or "two";
• a timing problem: you rushed or ran out of time?

The cause matters because each one has a different fix. Gaps need study. Mix-ups need you to learn the pair side by side. Misreads need you to slow down. Timing problems need pacing practice, not more content.

Use your mistake list

Your mistake list becomes your most valuable study material. Test yourself on it every few days: cover the answers, recall them, and remove an item once you have got it right on several separate days.

Spacing: why timing matters

Memory works better when practice is spread out. Five one-hour sessions over two weeks usually beat one five-hour session, even though the total time is the same.

How to space your practice:

• Study a little most days rather than a lot on one day.
• Revisit topics after a gap. Come back to something you learned after one day, then a few days, then a week.
• Mix topics in a session. Switching between subjects feels harder than staying on one, but it builds stronger, more flexible memory.

Repeating a test

If you have used up the tests for your exam, you can repeat one, but leave a week or more between attempts. Otherwise, you may remember which answer you chose rather than the fact behind it. When you repeat a test, focus on the questions you got wrong the first time.

Reading your scores sensibly

Scores vary from test to test. One good result may be luck; one bad result may be a bad day. Look at the trend over several tests, not a single number.

• Record each score with the date and the mode you used.
• Compare exam-mode scores with exam-mode scores. Practice mode scores are usually higher, because there is no time pressure.
• Watch for a plateau. If your scores have not moved for a week or two, change how you study: more review, more work on weak topics, fewer full tests.

Knowing when you are ready

A useful sign of readiness is scoring comfortably above the pass mark or your target, in exam mode, on several different tests in a row. One pass is not enough. For example, our Life in the UK study plan suggests 21 or more out of 24 on three tests in a row before booking.

A weekly routine that works

Adjust the routine to the time you have, but keep the balance of testing, reviewing and resting.

Common mistakes to avoid

• Taking test after test without review. Scores stall quickly.
• Using only practice mode. The time limit on the day then comes as a shock.
• Using only exam mode. You measure yourself constantly but learn slowly.
• Ignoring right answers you guessed. They hide gaps that will show up later.
• Cramming the night before. Sleep does more for your score than one more test.

Where to start

Choose your exam from our hubs, such as Life in the UK, US citizenship, SAT or GMAT, and take one test in exam mode today as your baseline. Then review it properly. That single habit, done consistently, makes more difference than any other study technique.