MCAT & CASPer
MCAT and CASPer Timeline: When to Take Each in Your Cycle
The MCAT and CASPer test completely different things, so people plan them in completely different ways. The MCAT eats months and decides which schools are realistic. CASPer takes a few focused weeks and is locked to a single application cycle. Get the order and the spacing right and both scores show up strong and on time. Get it wrong and you either rush the MCAT or miss a CASPer deadline you did not know existed.
This is the month-by-month plan we give students who are juggling both. It is built around one rule that most timelines ignore, and three real scheduling scenarios so you can find the one that matches your situation.
The two timelines at a glance
| Question | MCAT | CASPer |
|---|---|---|
| Prep length | 3 to 6 months | 2 to 6 weeks |
| Best window | Spring before you apply | Early summer to early fall, in cycle |
| Score release | About 30 days after test | About 2 to 3 weeks after test |
| Shelf life | Usually 2 to 3 years | One cycle only |
| What it decides | Your school list | Interview screening within that list |
Dates and windows shift each year. Treat this as a planning frame, then confirm specifics on the official AAMC and Acuity Insights calendars linked at the bottom of this guide.
The one rule that drives your whole timeline
CASPer is cycle-specific. You take it for the cycle you are applying to, scores go only to the programs you select, and nothing carries to next year. The MCAT is the opposite. Most schools accept a score from the past two to three years, so you can take it once and reuse it.
That single difference flips the priority order. The MCAT is the long, heavy, reusable investment, so it goes first and gets the months. CASPer is the short, perishable, cycle-bound task, so it slots in after your school list is set and timed to land before deadlines. Plan the MCAT like a marathon and CASPer like a well-rehearsed sprint.
The deadline trap. Many applicants treat CASPer as an afterthought, then discover a school wanted it weeks before the application due date. Some programs set their own CASPer cutoff. Always read each school's requirements page, not just the general deadline.
A month-by-month plan for one cycle
Here is the shape of a clean cycle for a student applying the same year they take the MCAT. Months are examples for a US MD cycle that opens in late spring. Shift everything earlier or later to match your own schools and your own start date.
Fall to winter: MCAT content review
Build your science base, work the AAMC materials, and take full-length practice exams under real timing. This is the heaviest stretch. Do not add CASPer prep here.
March to May: sit the MCAT
Test early enough that your score is back before you submit. An early date also leaves room for one retake if you need it, without blowing up the cycle.
May to June: finalize your school list and submit primaries
Once your MCAT is in hand you know which schools are realistic. Build the list, then submit your primary application as soon as the portal opens. This is also when you find out which of your schools require CASPer.
June to July: short, focused CASPer prep
Two to four weeks of structured practice is plenty for most people. Learn a response structure, drill scenarios under the real timer, and rehearse the video response section out loud.
July to September: sit CASPer, comfortably before deadlines
Pick a date that gets your results to every school with margin to spare. Remember the two to three week release lag and back up from your earliest deadline.
Fall to winter: secondaries and interviews
With both scores submitted, your energy moves to secondary essays and interview prep. The reasoning you built for CASPer transfers directly to ethical interview questions.
Why the MCAT goes first
Three reasons, in order of importance:
- It sets your school list. You cannot finalize where to apply, or know which schools require CASPer, until you know your MCAT score.
- It is reusable. A strong MCAT can serve more than one cycle. Front-loading it protects you if you end up reapplying.
- It is the bigger lift. Months of content review do not coexist well with anything else. CASPer prep is light enough to fit after the MCAT is behind you.
For a deeper side-by-side on what each test actually measures, read CASPer vs MCAT: key differences.
Three real scheduling scenarios
1. The early applicant
MCAT in March or April, primary submitted the first week the portal opens, CASPer in June or July.
This is the ideal. Rolling admissions reward early files, and you have buffer for a retake or a slow score release. If you can pull it off, do.
2. The gap-year applicant
MCAT taken the previous year and already in hand. School list mostly set before the cycle opens.
Your only live test is CASPer, so you have the luxury of timing it well. Prep for two to four weeks in early summer and sit it before your earliest deadline. No excuse to rush this one.
3. The late decision
You decided to apply mid-cycle, MCAT is recent or just done, deadlines are close.
Triage. Confirm each school's CASPer cutoff first, book the soonest CASPer date that still clears those cutoffs, then compress prep into focused daily reps. A tight structure beats cramming content you cannot study for anyway.
Timeline mistakes that cost applicants
- Forgetting the score-release lag. CASPer results take about two to three weeks. Booking a date a week before a deadline is a date you effectively missed.
- Studying for both at once. CASPer needs a clear head. Stacking it on top of MCAT crunch hurts both. Sequence them.
- Assuming all schools share one deadline. Some programs set earlier CASPer cutoffs than their application deadline. Check each one.
- Leaving CASPer until the last open date. Test slots fill, and a tech issue on test day can cost you. Build in a backup date.
- Taking the MCAT so late the score arrives after you submit. A late score delays a rolling-admissions file and can quietly sink an otherwise strong cycle.
Pin down your exact dates
Two pages settle this for your specific schools. Check our CASPer test dates guide and our take on the best time to write CASPer, then cross-check against the official calendars below.
Frequently Asked Questions
Should I take the MCAT or CASPer first?+
Take the MCAT first in almost every case. The MCAT needs months of content review and decides which schools are realistic for you, while CASPer needs only a few focused weeks and is tied to a single application cycle. Lock in the MCAT, then schedule CASPer once you know where you are applying.
How close to my application can I take CASPer?+
CASPer must be taken during the cycle you are applying to, and your results need to reach programs before their deadlines. Acuity Insights releases scores roughly two to three weeks after your test, so aim to sit CASPer at least three to four weeks before your earliest school deadline. Earlier is safer.
Does my CASPer score carry over to next year if I reapply?+
No. CASPer is cycle-specific. If you reapply in a new cycle you take a fresh CASPer, even if you scored well before. The MCAT is the opposite: most schools accept scores from the past two to three years, so a strong MCAT can carry across cycles.
Can I take the MCAT and CASPer in the same month?+
You can, but it is rarely the best plan. CASPer rewards calm, structured thinking, and the last weeks before the MCAT are usually your most stressed. If your dates have to overlap, sit CASPer a week or two after the MCAT once your head clears, as long as you still beat your school deadlines.
When do most competitive applicants take each test?+
A common pattern is MCAT in the spring (March to May) of the year you apply, primary application submitted in June, and CASPer in the early summer to early fall as program portals open. The exact months depend on your schools, so always check each program and the official AAMC and Acuity Insights calendars.