The big idea: A different trained human rater scores each scenario on a 1 to 9 scale, judging the quality of your reasoning. You receive a quartile. Carry it into the test as: Every scenario is a fresh start with a fresh reader. Win marks by reasoning clearly and completely, every single time.
Who scores you, and how
Casper is scored by trained human raters, not a computer and not an answer key. The system has three features that should shape your strategy:
A different rater scores each scenario. Your eleven scenarios are spread across many raters. The same rater scores both questions within one scenario, but the next scenario goes to someone new.
Responses are anonymized. Raters do not know who you are, or how you did on any other scenario.
Each scenario gets a single rating, commonly on a 1 to 9 scale, based on the overall quality of your judgment and reasoning across that scenario’s two questions.
There is no answer key. Raters are trained to evaluate how you think: did you understand the real situation, weigh more than one side, commit to something defensible, and show awareness of consequences and of other people. Two applicants who choose opposite actions can both earn high ratings if both reason well.
What you get back, and what schools get
The reporting is deliberately coarse for applicants:
You receive a quartile. Your overall performance is reported to you as first, second, third, or fourth quartile relative to other applicants in your profession. You do not see a precise score or per-scenario marks.
Schools receive a standardized score (your performance relative to the applicant pool), plus a single overall score, usually a few weeks after the test.
Because you only ever see a quartile, do not expect fine-grained feedback from the official test, and do not over-read your result. Your job in preparation is to make your reasoning consistently strong, which is what moves you up a quartile.
What the scoring means for your strategy
The mechanics above point to four concrete habits.
Consistency beats brilliance. Eleven scenarios, many raters, each judged fresh. A single dazzling answer cannot rescue several thin ones, because no rater sees the whole picture. Aim to make every scenario solid rather than making one perfect.
Answer every part. A rater can only score what you give them. A blank or one-line second answer is a low score on that scenario, no matter how good your first answer was. Breadth across the questions beats depth on one.
Reasoning is the currency. You are paid in marks for visible thinking: naming the issue, weighing sides, justifying a choice. Pleasant but empty answers earn little.
Stop hunting for the right answer. There is not one. Time spent searching for the “correct” choice is wasted; spend it reasoning clearly and writing.
These are not vague encouragements. They fall directly out of how the test is built, and the rest of the book turns them into a method.
Key takeaways
Trained human raters score each scenario 1 to 9; a different rater scores each scenario, and responses are anonymized.
There is no answer key. Opposite decisions can both score well if both are well reasoned.
You receive a quartile; schools receive a standardized score. Expect no detailed feedback from the official test.
Strategy follows the mechanics: be consistent across all eleven scenarios, answer every part, make your reasoning visible, and do not waste time hunting for a single right answer.
