Is There a Casper Book? The 2026 Options, Compared

Is there a Casper book? Yes, a few exist, but most are paid, self-published, and written for an older version of the test. There is no official Casper textbook, and the company behind the exam, Acuity Insights, says the single most useful thing you can do to prepare is take its free practice test. So before you spend money, it helps to know what is actually out there and what genuinely moves your score.

Here is the honest 2026 landscape, the red flags worth avoiding, and a free option built on the current format.

First, what the test is (it changes which books still help)

Casper is an open-response situational judgment test: you read or watch a scenario and write or speak your own answer, and trained human raters score the quality of your reasoning. There is no answer key. The format changed recently, and the current version has two sections, a video-response section and a typed-response section, across 11 scenarios. There is a fuller walkthrough of that format in what the Casper test is.

This matters for books. A guide written for the previous format drills timing and structure that no longer match the test you will sit, which is the single biggest problem with most of the Casper books on the market.

What Casper books exist

Here is the current landscape, paid and free.

Resource	Type	Cost	Notes
BeMo’s Ultimate Guide to CASPer Test Prep	Book	Paid	Published 2018; written for an older format
CASPer Test Prep Guide (Katta and Li-Wang)	Book	Paid	2022-2023; predates the current video-and-typed format
2026 CASPer Test Prep Made Easy	Book	Paid	Self-published; recent, quality varies
Casper Test Prep Guide, 90 Practice Scenarios	Book	Paid	Self-published scenario pack
Acuity Insights official practice test	Practice	Free	The closest thing to the real test, but no scoring or feedback
The Casper Method (our guide)	Book	Free	Built on the current 2026 format; teaches a method with worked answers

Two things stand out. First, every traditional book is paid, and several are years old. Second, there is no official Casper book at all; Acuity provides a free practice test instead.

Do you actually need a book?

Honestly, no, not a paid one. Acuity Insights itself says the most valuable preparation is the free official practice test, and what actually moves your score is not owning a book. It is a repeatable way to reason through a scenario, practiced under the clock until it is automatic. A guide helps only insofar as it teaches you that method and lets you rehearse it.

That is good news for your budget. Between a solid free guide and the free official practice, you can prepare well without paying for anything.

Red flags when choosing a Casper book

If you do consider a paid book, watch for these:

• Claims of leaked or real questions. Casper’s scenario bank is updated regularly, so anything promising real questions is misleading.
• Guaranteed scores. No resource can guarantee a quartile. Casper is scored by a rotating group of human raters, which makes a guarantee impossible. See what a good Casper score is.
• Written for the old format. Check the year, and check whether it even mentions the video section. A 2018 or 2022 guide will rehearse the wrong timing.
• A pile of scenarios with no method. Practice scenarios only help if you also learn how to answer them. A scenario pack with no framework leaves you guessing.

A free, current-format option

We wrote a free Casper study guide for exactly this gap: The Casper Method. It is built on the current 2026 format, it teaches one repeatable approach you run on any scenario, and it is full of original worked answers shown weak and then strong, so you can see what separates them. It is free to read, with no account required.

If you want the method in article form first, start with how to answer Casper scenarios and the full prep plan, then practice with sample scenarios and model answers.

How to prepare, in short

You do not need to buy anything to do this well:

1. Learn the current format so your timing is right (what the Casper test is).
2. Adopt a repeatable method instead of improvising (how to answer Casper scenarios).
3. Drill scenarios under realistic timing, then review honestly (how to prepare for Casper).
4. Use Acuity’s free official practice test for the most realistic run.

The one thing free materials usually cannot give you is feedback, since you only ever see a quartile. That is what Casper practice with human scoring adds. But the reading and the method are free, and for many applicants that plus official practice is enough.

So yes, there is a Casper book, in fact several. Most are paid and dated. You can prepare well for free with a current-format guide and the official practice test, and pay only for what genuinely adds value, which is feedback, not another scenario list.