Casper for Western Engineering: Format and Practice

What Western says

Western Engineering’s admissions page is unambiguous: Casper is “a mandatory requirement for all OUAC applicants” for the 2026–27 admissions cycle, meaning Fall 2027 entry. It started in the Fall 2024 cycle. The specifics from Western’s Casper page:

• Which test: register for the Canada Casper 1 sitting (Western lists the code CSP-10200). The other versions are for other professions and won’t count.
• Which dates: only the test dates Western has approved for its timeline appear as options, and Western says these are “the only testing dates for applying to our program” and that extra dates are unlikely to be added. Register at least three days before the sitting you want.
• One attempt per cycle. There is no retake if you have a bad morning.
• Results reach Western about three weeks after your test, and no offer goes out until they arrive. Western says offers can begin as early as November, so an early sitting means you’re eligible for an early offer.
• What it’s for: Western says Casper “will complement the other tools” it uses to review applicants and measures “personal and professional skills” it considers important for success in the program. When the test was introduced, the faculty described looking for “strong academic and key human skills, such as problem-solving, collaboration, and resilience.”

What Western does not publish: how the score is weighted against your average, whether there is a cut-off, and what quartile, if any, is “enough.” Anyone who tells you the formula is guessing. The OUAC deadline and current admission average for Western Engineering aren’t on the Casper page; confirm both on Western Engineering’s apply page before you pick a test date. The OUAC deadline and Engineering’s Casper date are both on our Western deadlines page.

The format for the 2026–27 cycle

Casper is run by Acuity Insights, and its help centre describes the current test as eleven scenarios in a fixed order:

• Four video-response scenarios. Each has two questions shown one at a time, with one minute to record each answer. Eight recordings in total.
• Seven typed-response scenarios. Each has two questions shown together, with three and a half minutes to type answers to both. Fourteen typed answers.
• Breaks. An optional ten minutes after the video section and five minutes after the fourth typed scenario.
• Length. Acuity estimates 65 to 85 minutes. Western’s page says to allow 90 to 110, which is the safer number to block out.

Each scenario is a short video clip or a paragraph: a teammate cutting a corner, a manager asking for something that isn’t quite right, a friend in a bind. The questions ask what you would do and why. There is no engineering content and nothing to study. Trained raters score each response on the quality of the reasoning and the consideration shown to the people in it, not on grammar, accent or polish. Format changes by cycle, so check Acuity’s format page the week you book.

What “Q4” actually means

This is the part most applicants get backwards, so slowly:

• Programs don’t get your quartile. Acuity sends Western a standardised score, a z-score, showing where you sit relative to everyone who took the same test type in the same period. Zero is the average of that group; positive is above, negative below.
• You get a quartile, about four to five weeks after the test, and only after programs already have the real number. Fourth quartile means your responses were rated stronger than roughly three quarters of your cohort. First quartile means most of the cohort was rated stronger. Acuity’s own wording is that Q1 “does not mean you failed.”
• It’s relative to your sitting. Your answers are rated against other people who answered the same scenarios. A different test date is a different pool, which is why two students with similar answers can get different quartiles.
• Q4 is not a pass and Q1 is not a fail. Acuity says most programs “consider all quartiles” and use Casper as one data point among many, which matches Western’s “complement the other tools” language. A Q2 with a 93 average and a Q4 with an 84 are not the same applicant, and nobody outside Western knows how those trade off.

What a strong Casper answer does

Casper scenarios are built so the obvious reaction is incomplete. A good answer, in this order, usually:

1. Names what it would want to know first. Most scenarios are missing a fact on purpose. “Before I did anything I’d want to know whether…” is the sound of someone who doesn’t jump.
2. Considers the other person, especially the one the scenario invites you to judge. What would explain what they did?
3. Commits to an action, usually the least dramatic one that actually addresses the problem: a private word before an escalation, a question before an accusation.
4. Says what happens if that fails, and where the line is. Safety, honesty and fairness are where the line usually sits, and engineering scenarios lean on safety.

One minute is about 140 spoken words, and there is no prep timer beyond reading the question, so the first move has to be reflexive. In the typed section, three and a half minutes for two questions is roughly ninety seconds each: short sentences, one move per sentence, no going back to polish.

It asks a question, gives the technician a possible reason, refuses on a principle it names, offers a fix, and states the escalation without drama. That is the whole scoring pattern in 55 seconds.

Twelve practice scenarios in the Casper style

AcceptMe practice scenarios, not Casper items; nobody outside Acuity has those. For each, answer “what would you do and why” in one minute on camera, then a follow-up like “what if they react badly” in another minute. Then type two of them at three and a half minutes per pair.

1. Your design-project group has split the work four ways. One member’s section is due tomorrow and he tells you he hasn’t started because of a family situation, and asks you not to tell the others.
2. You notice the lab’s eyewash station has been blocked by a stack of boxes for a week. The lab tech says it’s fine, nobody uses it.
3. A classmate offers to share last year’s graded assignment for a course where the problems haven’t changed.
4. You are the newest person on a summer construction crew and the foreman skips a harness check because “it’s a short job.”
5. Your teammate presents your idea to the client as her own. The client loves it.
6. A friend confides he’s been paying someone to write his lab reports and asks for your opinion, not your judgement.
7. You’re tutoring a Grade 10 student in math and her father says he only cares that she passes the test on Friday, not that she understands.
8. Two members of your robotics team are in a loud argument during a build session and younger members are watching.
9. A customer at your part-time job is rude to a coworker who has a stutter. The coworker asks you to let it go.
10. Your group’s prototype failed a test. The team lead wants to report the earlier, passing result and fix the problem quietly before the demo.
11. A member of your team keeps interrupting the only woman in the group during meetings. She hasn’t said anything about it.
12. You discover a calculation error in a report your supervisor already submitted to a client two weeks ago.

Where to practice for free

Your Acuity Insights account, the one you book the test through, includes a free full-length practice test in the real interface with the real timing, and it is the only practice that uses the actual system. Do it once for the interface and once more the week before for the timing. Beyond that, the free simulators that rank for “casper practice test” are mostly the free tier of a paid prep product; treat them as scenario banks, not as a score. The scenarios on this page are free, and AcceptMe’s custom interviews will run any of them on a clock with a transcript, which is the part the free simulators do not give you.

Mistakes that cost the most

• Leading with the verdict. “I would report him” as a first sentence skips the reasoning being scored.
• Making the other person a villain. Raters look for whether you considered their side, even when you decide against them.
• Stock phrases. “I would remain professional and empathetic” says nothing. Say what you’d actually say to the person.
• Booking the last available date. Results take three weeks to reach Western and offers can start in November. The last sitting means the last look.
• Practicing at your desk with no clock. The reasoning is easy with time. The test is doing it eight times in a row, on camera, at sixty seconds.

Where to go from here

If nursing is also on your list, the Casper for nursing guide covers which BScN programs require it, the 80/20 weighting McMaster Nursing has published, and a second set of practice scenarios in a healthcare setting. If you’re trying to work out whether a Casper quartile can rescue an average or sink one, the how-much-does-it-matter guide goes through what each Ontario program has actually published about weighting. And if Western is one of four engineering schools on your OUAC list, the Ontario supp app map puts Waterloo’s AIF, McMaster’s videos and U of T’s profile on one table with their dates. If your school is nominating you for a Western National Scholarship, that essay and interview sit on the same January calendar, and if Western Integrated Science is also on your list, its WISc supplemental application is a written form on a different April deadline. Then put a scenario on a clock: AcceptMe’s custom interviews will hand you an unseen dilemma with a ten-second prep window and a one-minute answer, eight in a row, and show you in the transcript whether you named the missing fact before you named the verdict.