Casper Test Dates 2026-2027: How to Pick Your Date
How the Casper testing calendar works, the general shape of the 2026-2027 schedule, and how to pick a date that beats your deadlines.
Quick answer
Casper is offered roughly every two to three weeks year-round, with extra sessions added from August through October for peak application season. Register at least 3 days ahead through your Acuity Insights account, and pick a date that leaves a 2 to 3 week buffer before your earliest program deadline, since that's how long score delivery takes.
Casper is offered on a rolling schedule, roughly every two to three weeks, with extra sessions added during the busy August-to-October application window. You register through your Acuity Insights account, and the exact dates, times, and distribution deadlines you see depend on the test type and programs you select. This guide explains how the calendar works, shows the general shape of the 2026-2027 US Medicine schedule, and walks through how to pick a date that actually gets your scores to schools on time.
How the Casper Testing Calendar Works
A few rules apply no matter which test type you're booking:
- You can only take Casper once per admissions cycle. There's no do-over if your test goes badly, so treat date selection carefully.
- Scores take 2-3 weeks to reach programs, and your quartile appears in your account about 4-5 weeks after your test. Work backward from your earliest deadline.
- Reserve at least 3 days before your test date. Acuity needs that window for ID verification and payment processing; last-minute reservations aren't guaranteed.
- Popular sessions fill up, especially evening slots close to major application deadlines. Booking early protects your preferred time.
2026-2027 US Medicine (MD/DO) Test Dates
Sessions for the 2026-2027 cycle run from spring 2026 through February 2027, following Acuity's typical every-two-to-three-week cadence. This is the general shape of the schedule; always confirm the exact dates, times, and your distribution deadline on Acuity's official Dates and Fees page, since availability is specific to the programs you select and times shown depend on your timezone settings.
| Month | Typical sessions |
|---|---|
| March-April | 2 sessions, evenings |
| May | 2-3 sessions, evenings |
| June-July | 3-4 sessions, including some afternoon times |
| August-September | 4-5 sessions, the busiest stretch of the cycle |
| October | 2 sessions |
| November-December | 1 session per month |
| January-February | 1 session per month, the last sessions before the cycle closes |
If your programs have an early secondary deadline, aim for a spring or early-summer session so your score has time to arrive before things get competitive. If you're applying later in the cycle, the August and September sessions are typically the last ones that comfortably clear most fall secondary deadlines once you account for the 2-3 week delivery window.
Canadian and Other Program Test Dates
Canadian medical programs, French-language Casper, and other health professions (nursing, PA, dentistry, pharmacy, veterinary medicine) run on separate, program-specific schedules with their own test codes. For example, Memorial University's MD program and McGill's English and French MDCM programs each have distinct sessions and deadlines. Rather than relying on a static list, select your specific program on Acuity's Dates and Fees page to see the sessions that actually apply to you.
How to Register
The full sign-up process, including test-type selection, score distributions, and the mistakes that cost applicants money, is covered in our registration walkthrough. The short version:
- Create an Acuity Insights account using the same name and email you'll use on your program applications.
- Select your program type and test type. This determines which sessions and fees you'll see. If you're unsure which test type applies to you, see our guides for nursing and PA school applicants.
- Confirm every school on your list appears in the distribution options before you book. If one is missing, you may be looking at the wrong test type.
- Reserve your date at least 3 days ahead, and double-check the displayed time zone against your own.
- Have a government-issued photo ID ready for identity verification on test day.
How to Choose the Right Test Date
Work backward from your earliest deadline, not your latest one:
- Find your tightest constraint. List every program's final accepted Casper test date and distribution deadline, then identify the earliest one.
- Add a 3-week buffer for score delivery, plus a few extra days for safety.
- Pick a session comfortably before that date, ideally with at least one more available session as backup in case of illness or a technical issue.
- Register early. Once you've picked a date, book it. Popular sessions close as the cycle progresses.
For the full picture of which schools require Casper and their general deadline patterns, see our 2025-2026 medical school requirements list.
Frequently Asked Questions
How often is the Casper test offered?
Roughly every two to three weeks year-round, with additional sessions added from August through October to cover peak application season.
How far in advance should I register for Casper?
At least 3 days, which Acuity requires for ID verification and payment processing. In practice, booking a few weeks ahead is safer, since popular sessions fill up.
Can I take Casper more than once in a cycle?
No. You get one sitting per admissions cycle, with a retake allowed only if Acuity verifies a technical failure during your test.
When should I take Casper if I'm applying early in the cycle?
Aim for a spring or early-summer session. Some programs won't review your application until your Casper score arrives, so testing early keeps your file moving.
What if my top-choice test date is full?
Book the next available session that still clears your earliest deadline once you factor in the 2-3 week score delivery window. Waiting for a preferred slot to reopen is risky.
The Bottom Line
Casper's calendar runs on a predictable rhythm, but the specific dates, times, and deadlines that matter to you depend entirely on your program list and test type. Check Acuity's Dates and Fees page directly, work backward from your earliest deadline with a real buffer, and register as soon as you've decided. Then put your remaining time into format practice instead of second-guessing the calendar.
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