Plan your prep
How to prepare for Casper: a practical guide.
Most Casper prep advice focuses on what good answers look like. That's useful, but it skips the harder question: how do you change your habits before test day? What follows is a two to three week plan, and the prep that feels productive while changing nothing.
What most people get wrong about Casper prep
The most common prep approaches are also the least effective, so they are worth clearing out of the way first.
What actually works
Three things have to be true at once. Any one of them on its own does very little.
01
Timed practice with fresh scenarios
You need to write actual responses under a real clock, using scenarios you haven't seen before. This is the only way to build the specific skill Casper requires: generating clear, specific, balanced answers under time pressure.
02
Feedback that names specific weaknesses
Knowing a response was 'too vague' doesn't tell you what to do differently. Useful feedback identifies exactly where the answer fell short: a sentence that was too abstract, a perspective that was missing, a step that was disproportionate. That level of specificity is what changes behaviour.
03
Enough repetition for adjustments to stick
Most people notice a meaningful improvement after 5-8 sessions. The first 2-3 help you see your patterns; the next few are where you actually change them. One or two sessions gives you useful information but probably not enough time to act on it.
A realistic preparation timeline
Two to three weeks of regular practice is enough time for most applicants to see real improvement. Here's how to structure it:
- Read the Casper test format guide so you know what you're preparing for
- Complete your free sample and review the feedback carefully
- Note which weaknesses come up: generic answers, time problems, missing perspectives
- Do 1-2 more paid sessions, focusing on the specific issue from your sample feedback
- Target the specific patterns identified in week 1
- If your answers are too vague: practise writing out actual words you'd say, not just what you'd do
- If you're running out of time: practise hard cutoffs, stopping at 3.5 minutes even if unfinished
- 2-3 sessions this week, reviewing feedback each time
- Do 2-3 sessions to consolidate improvements
- Compare feedback from week 3 to week 1: which patterns have changed?
- Final session 2-3 days before test day, then stop
- Day before: review your setup only, no new practice
The three things worth focusing on
Most improvement in Casper written responses comes from fixing the same three issues:
Write specific language
Instead of "I would handle it respectfully," write out what that actually sounds like: "I'd say something like 'I noticed you seemed upset. Do you want to talk about it before the meeting?'" Specificity is the clearest signal of perspective-taking ability.
Hold both sides before choosing
Before writing your response to an ethical or interpersonal scenario, ask: what does each person in this situation actually want, and why? Acknowledging competing legitimate interests (even if you ultimately come down on one side) produces noticeably stronger answers.
Pace yourself in the 3.5 minutes
A common failure mode: spending too long on question 1 and running out of time for question 2. Both questions share one 3.5-minute clock, so practise dividing it deliberately, not perfectly evenly, but with intention. An incomplete second answer costs you.
About Casper Prep Test
What this tool does, and what it doesn't claim
Casper Prep Test is an independent timed practice tool. Its scenarios are AI-written, and every paid session deals you ones you have not seen before. It runs the real test's timing in both sections: one minute per spoken question, 3.5 minutes per typed pair. Answers are scored against the same competency framework evaluators focus on. The feedback comes from an AI model and is for practice only; it is not an official Casper score.
A full sitting covers both sections, video and typed. It is not affiliated with Acuity Insights, which administers the official Casper test.
Start preparing
A free timed sitting to start.
Every account starts with one free scored sitting: the whole typed section, seven scenarios, the same seven for everyone. You can judge the feedback and the format before deciding whether to continue. No payment required.
Common questions
How long does it take to prepare for CASPER?
Most applicants benefit from 2-3 weeks of regular practice. Less than a week is usually not enough time for the feedback to change your habits; more than a month is rarely necessary. The key is consistent sessions with feedback rather than cramming.
Can you actually improve your CASPER score with preparation?
Yes. The most common weaknesses (generic answers, one-sided reasoning, poor time management) are fixable with targeted practice. Preparation that gives you feedback on your specific answers is more effective than reading about what good answers look like.
What should I do the week before my CASPER test?
In the final week, focus on timed practice (one or two sessions), reviewing feedback from previous sessions, and making sure your setup is ready: quiet space, reliable internet, working webcam. Consolidate what you've already practised instead of cramming new theory.
Is it possible to over-prepare for CASPER?
Over-preparation in the sense of becoming robotic or scripted is a real risk. If every answer starts to sound like a checklist ('First I would acknowledge... then I would...'), that's a sign to focus less on structure and more on sounding like an actual person in the scenario.
Should I practise the video section too?
Yes. The current test opens with 4 video-response scenarios, where you answer 2 questions per scenario with 1 minute to record each answer. A full sitting on Casper Prep Test runs the same way, on camera, so it is something you can practise rather than guess at.