March 4, 2026
Written By
Michael Minh Le
Subscribe to the Premed Catalyst Newsletter
If you’re applying to medical school in 2026, you’re probably wondering what schools require CASPer, and how much this one exam can actually impact your chances. The problem isn’t just the test itself. It’s the uncertainty. Is it required for MD? DO? What about Duet? PREview? Miss one requirement, take it too late, or underestimate its importance, and suddenly your otherwise strong application could be at risk.
In this guide, we’ll give you a complete breakdown of what schools require CASPer in 2026, including US MD and DO programs. You’ll also learn what CASPer actually tests, why admissions committees use it, and whether you can study for it. We’ll cover timing, retakes, Duet requirements, and what happens if your score isn’t where you hoped it would be.
But here’s the bigger picture: CASPer is just one small piece of a much larger strategy. The students who consistently earn acceptances don’t just check boxes. They build applications with intention. That’s why at Premed Catalyst, we offer a free Application Database with 8 full AMCAS applications that earned real acceptances to schools like UCLA and UCI. Instead of guessing what works, you can study exactly what got in.
Get your free resource here.
Here’s the brutal truth: CASPer doesn’t test knowledge. It tests who you are under pressure.
There are no equations. No biochemistry pathways. No “calculate the force” questions.
CASPer is designed to answer a different question entirely: Who are you when things get uncomfortable, ambiguous, or unfair? Because medicine is uncomfortable, ambiguous, and unfair all the time.
CASPer evaluates nine core competencies:
Notice what’s missing: raw intelligence.
Your GPA and MCAT already speak to cognitive ability. CASPer exists because medical schools have learned the hard way that high intelligence does not automatically translate to professionalism, maturity, or emotional steadiness.
The test places you in messy human situations, like a teammate slacking off, a colleague behaving unethically, or a patient making a questionable decision, and watches how you think through them.
Do you pause before judging? Do you acknowledge multiple perspectives? Do you protect patient safety without humiliating others? Do you default to empathy before accusation?
In other words, CASPer isn’t measuring what you know. Instead, it’s a professionalism stress test.
The structure is simple, but intentionally pressurized.
You’ll move through 11 scenarios over roughly 65–85 minutes, responding to a mix of typed and video-recorded prompts. Each scenario is graded by a different rater, which helps reduce individual bias but also means every scenario matters.
The time constraints are tight. You don’t get to craft a beautifully edited essay. You don’t get to re-record until it sounds perfect. You respond in real time. And that’s the point.
In medicine, you don’t get unlimited drafts before speaking to a grieving family. You don’t get an hour to decide how to address an ethical concern on your team. CASPer simulates cognitive and emotional pressure to see how you organize your thoughts when the clock is actually ticking.
That’s also why you can only take CASPer once per admissions cycle.
GPA and MCAT measure cognition. CASPer measures judgment.
Admissions committees already know who can memorize, calculate, and perform on standardized exams. What they don’t fully know, until clinical rotations, is who can:
Schools are trying to reduce risk. They want fewer professionalism issues, fewer breakdowns under stress, and fewer students who are academically brilliant but interpersonally combustible.
When you strip it down, they’re asking a very human question: Would I trust this person with a vulnerable patient?
Because when it’s your mother in that hospital bed, you don’t just care how well her physician performed on organic chemistry. You care whether they communicate clearly, act ethically, and treat her with dignity.
CASPer is not universally accepted as a flawless measure of character.
There are legitimate concerns about fairness and socioeconomic bias. Faster typists may have an advantage. Applicants with access to coaching may perform differently than those without it. Critics question whether a time-pressured situational judgment test can truly capture how someone behaves in real clinical environments.
Some schools now accept PREview as an alternative. Some require Duet in addition to CASPer. And requirements shift from cycle to cycle.
This list reflects US MD programs that explicitly require the CASPer situational judgment test (not optional or only recommended alternatives like PREview), though requirements can shift slightly each cycle and should always be confirmed on the school’s admissions page.
A significant number of Texas public schools require CASPer. That matters if you're applying with TMDSAS.
Translation: If Texas is on your list, CASPer probably is too.
Below are osteopathic (DO) medical schools in the United States that require CASPer for the 2026 admissions cycle.
As always, verify directly with each school before registering. Requirements can shift quietly between cycles.
Unlike MD programs, CASPer is less universally required among DO schools, but it’s growing.
And here’s the mistake we see every cycle: applicants assume “DO means no CASPer.” Then they scramble in July. Make sure you go through your school list and double-check which ones require it.
Some schools don’t just require CASPer. They also require Duet, the values-alignment assessment administered through Acuity Insights.
Duet is not another ethics test. It measures how well your priorities align with a school’s program values (e.g., research intensity, community focus, primary care mission, etc.).
Below are U.S. medical schools that require both CASPer and Duet for the 2026 admissions cycle.
If a school requires CASPer + Duet:
PREview is the AAMC’s Situational Judgment Test. It’s their version of CASPer.
Same general idea: you’re presented with professional scenarios and asked to evaluate responses based on effectiveness. It’s designed to measure competencies like ethics, professionalism, cultural awareness, and teamwork.
So if CASPer asks, “What would you do?”
PREview often asks, “How appropriate is this response?”
Some schools allow applicants to submit CASPer or PREview. Not both required. Not both recommended. Either.
This is where premeds overthink it. They panic and wonder, “Should I take both to be safe?”
Answer: No.
You don’t need to take both unless a school explicitly requires both. Taking both does not make you look more competitive. It just doubles your time, stress, and cost. Admissions committees aren’t sitting there impressed that you volunteered for extra testing.
That being said, every cycle, policies shift. Some schools that required CASPer last year switch to PREview. Some accept either. Some quietly remove the requirement altogether. Go to the school’s official admissions website and confirm.
And here’s how to decide strategically:
You’ve probably heard this before: “You can’t study for CASPer.”
That’s a myth.
People say this because CASPer doesn’t test content knowledge. There’s no formula sheet. No flashcards. No Anki deck titled Ethical Dilemmas Chapter 7.
You can’t memorize “right answers.” And if you try? It will sound robotic, forced, and inauthentic. Raters are trained to see through that. So yes, you can’t cram CASPer the way you cram glycolysis.
But that doesn’t mean you can’t prepare.
Here’s how:
None of that changes your character. It changes how clearly your character shows up.
And it prevents you from:
Training builds mental structure. It helps you stay calm. It keeps you from spiraling when the clock is ticking.
CASPer is typically offered July through May, depending on the admissions cycle and program requirements. Specific test dates vary by school, and not every date is accepted by every program.
You must register in advance through your Acuity Insights account. Spots can fill, especially early in the cycle.
And remember:
Take CASPer after:
The goal isn’t perfection. It’s control.
You want to walk in knowing:
And here’s what not to do:
That mindset is how strong applicants land in lower quartiles.
CASPer feels big when you’re in it. It’s easy to spiral and think, “What if this one test ruins everything?” Take a breath. CASPer matters. But it is one component of a much larger strategy.
The applicants who consistently earn acceptances aren’t the ones obsessing over a single exam. They’re the ones who build cohesive, intentional applications.
That’s why we compiled a free Application Database that includes 8 full AMCAS applications that earned acceptances to competitive schools like UCLA and UCI. Not summaries. Not vague advice. Real activity descriptions. Real personal statements. Real stories.
Study what works for yourself. Get your free resource here.
No. You get one attempt per admissions cycle. That score is automatically distributed to the schools you selected, and there are no retakes because you “felt off” or think you could do better. If you underperform, you wait until the next cycle. That’s why taking it seriously the first time isn’t optional.
No. Schools do not see your typed or video responses. They receive a quartile score (1st through 4th) that compares you to other applicants who took the exam during the same testing window. They don’t see your exact numerical score, and they don’t see the scenarios you were given, just your relative performance band.
In general, a 4th quartile score is considered strongest, and a 3rd quartile score is typically safe at most schools. A 1st quartile can raise concerns, especially at programs that value situational judgment heavily. That said, CASPer is one piece of a holistic review. A lower quartile doesn’t automatically mean rejection, but it does mean the rest of your application needs to be solid.
The MCAT carries more weight overall because it directly predicts academic performance in medical school. CASPer, on the other hand, assesses professionalism and judgment. Think of the MCAT as a major academic filter and CASPer as a professionalism screen. A weak MCAT is harder to offset. A weak CASPer can hurt, but rarely outweighs strong academics and a cohesive application.
No, not all Texas schools require Duet. Many Texas programs require CASPer, especially through TMDSAS, but Duet requirements vary by institution and can change by cycle. Some require CASPer only, some require CASPer plus Duet, and others may not require Duet at all. Always confirm directly on the school’s admissions page before assuming.
If you land in the 1st quartile, it may raise concern at some schools, but it doesn’t automatically end your cycle. Admissions committees review applications holistically. Strong academics, meaningful experiences, and a compelling narrative can offset a weaker CASPer score. But if multiple required schools emphasize situational judgment, a low score can quietly limit interview invitations.
