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Hong KongHKSI Paper 1 mock exams: how many, when, and how to sit them
Sit at least three full mocks: 60 questions, 90 minutes, no pauses, no notes. The first tells you where you stand, the middle ones build pace, and the last should land three or four days out. A mock you pause is a practice set with extra steps.
A mock exam does one thing that a practice set cannot. It puts you under sustained uncertainty for ninety minutes, where you never know which body of rules the next question is coming from and you cannot stop to check anything. That is the actual skill Paper 1 tests, and it is trainable.
Most candidates sit one mock, two days before the exam, and treat the score as a verdict. That is close to the worst possible use of the tool.
How many mocks should you sit?
Three is the sensible floor. Four or five if you have the material and the time.
| Mock | When | What it is for |
|---|---|---|
| First | Once you have read all nine topics, even badly | A baseline. Expect a poor score and do not read anything into it beyond which topics are empty. |
| Second | Roughly two weeks out | Pace. This is the one where you learn what the ninety-minute clock feels like end to end. |
| Third | One week out | Coverage check. Score here is genuinely informative. |
| Fourth | Three or four days out | Rehearsal. Same time of day as your booked sitting, if you can. |
| Night before | Do not | Nothing you learn is actionable and a bad score costs you sleep. |
Our own course carries 5 mock forms drawn from 65 questions that never appear in the practice modules, precisely so that a mock is not a replay of material you have already reviewed. That separation matters more than the number of forms. A mock made of questions you have seen measures your memory of the bank, not your readiness.
What conditions make a mock a mock?
Five rules, and they are not negotiable.
- Ninety minutes, timed, in one sitting. No pauses for coffee, no answering the door.
- Closed book. No notes, no search, no checking one thing because you nearly know it.
- No scoring until the end. Marking as you go turns a rehearsal into a quiz.
- Questions you have not seen. Reusing a form you have already reviewed inflates your score by a wide margin.
- Somewhere quiet that is not your bed.
This is where the opinion goes, and it is unpopular. A mock you paused is worth almost nothing as a predictor. Not less than a real one, close to nothing, because the whole point is measuring your performance under continuous load and you removed the load. If you cannot find ninety uninterrupted minutes this week, do a timed set of thirty instead and call it what it is.
What does a mock score actually predict?
Less than candidates want it to. The pass mark is 70%, which is 42 of 60, and the published twelve-month mean pass rate for Paper 1 to June 2026 was 51.9%, so roughly half of the people who sit it do not pass. A mock score sitting on the line is not a comfortable position.
- Real pass mark
- 70% - 42 of 60
- Comfortable mock score
- Consistently above 50 of 60 on unseen questions
- Borderline
- 42 to 45 - one bad topic away from failing
- Not ready
- Below 40, or above 42 only on questions you have seen before
- Twelve-month mean pass rate
- 51.9% to June 2026
The honest caveat: our score bands are calibrated against our own items and our own candidates, not against HKSI's paper, because HKSI publishes neither past papers nor item statistics. Anyone who gives you a precise conversion between their mock and the real exam is inventing it. Treat the bands as a margin-of-safety guide.
How should you review a mock?
Not on the same day. Sitting ninety minutes of questions is tiring and your review will be shallow if you do it while flat. Leave it overnight, then give the review at least as long as the mock took. Two hours for a ninety-minute paper is normal and it is where the score improvement actually comes from.
- Separate your answers into four piles: right and confident, right but guessed, wrong, and unanswered. The second pile is the one everybody ignores and it is the most predictive.
- For every item in piles two, three and four, write one line naming what the wrong option was testing rather than what the right answer was.
- Tally those lines by pattern, not by topic. If four of your errors were partial-compliance answers across three different topics, you have one problem, not three.
- Tally again by topic and mark any topic where you scored below the pass mark.
- Pick the two weakest topics and one pattern. That is your next week. Everything else waits.
The longer version of step two is in how to review wrong answers, and the pattern list is in the distractor patterns post.
What if your mock scores stop improving?
It happens to almost everyone somewhere in the forties. The plateau has a specific cause most of the time: you are reviewing facts and not patterns, so every wrong answer teaches you exactly one thing and nothing transfers.
Take your last two mock reviews. Count how many of your notes are of the form "the answer is X" and how many are of the form "I confused X with Y because". If the first outnumbers the second, that is your plateau, and the fix costs nothing except a different way of writing the note.
The other common cause is topic avoidance. Candidates rehearse what they are good at because it feels productive. Check your mock scores by topic across the whole series. If Topic 3 has been at half marks for three mocks running, no amount of general practice is going to move it.
Mixed sets versus full mocks
They are different tools and candidates conflate them. A thirty-question mixed set trains retrieval under uncertainty and takes 45 minutes, which fits in a lunch break. A full mock trains stamina and pacing and takes an evening once you include the review. Use mixed sets weekly and full mocks at the milestones in the table above.
If you are still working through topics one at a time, mocks are premature. There is a fuller answer in when to start doing mocks.
Common questions
How many mock exams should I do before HKSI Paper 1?
At least three full papers of 60 questions in 90 minutes, spread across your final month rather than crammed into the last week. Sit each one on questions you have not seen before, because reusing a form measures recall of that form rather than readiness.
What mock score means I am ready for HKSI Paper 1?
Consistently above 50 of 60 on unseen questions gives you a real margin. The pass mark is 42, so scoring in the low forties means one weak topic on the day could take you under. Aim for headroom, not for the line.
Are there free HKSI Paper 1 mock exams?
Free full-length mocks exist, including ours, though free versions usually give you a score and a topic breakdown rather than full explanations. Check whether the questions are original and cited, since a free mock of unsourced questions can teach you wrong law.
Should I sit a mock the night before the exam?
No. Anything it reveals is too late to fix, and a poor score the night before costs you sleep and confidence for no gain. Make your last full mock three or four days out and use the final evening for your own error log.
Can I reuse the same mock exam?
Only as a revision tool, never as a measurement. Second attempts on a paper you have reviewed are inflated by recognition, and candidates routinely mistake that inflation for progress. Keep at least one form unseen for your final rehearsal.