The MRCPsych CASC Explained: What the Exam Is Really Testing

In my experience as a former examiner, most candidates who fail the MRCPsych CASC have already read enough. They know the clinical guidelines, the psychopharmacology dosages, and the diagnostic criteria inside out. What they have not yet mastered is using that knowledge out loud, against a relentless clock, in front of an examiner who is scrutinising every micro-interaction.

That is fundamentally what the CASC—the Clinical Assessment of Skills and Competencies—tests. It is the clinical examination of the MRCPsych and the final hurdle on the pathway to membership of the Royal College of Psychiatrists. It does not test theoretical knowledge on its own: it evaluates what you do with it under pressure.

This comprehensive guide sets out the exam as it stands for the January 2027 sitting: the operational format, eligibility and portfolio pathways, when and where it runs, the scoring thresholds, and the 8 clinical skills underpinning every station.

The Format: 16 Stations, 2 Circuits, 7 Minutes Each

The CASC is an objective structured clinical examination (OSCE) comprising 16 individual stations, delivered as two circuits of 8 stations. Every station lasts exactly 7 minutes. Since September 2023, the exam has returned entirely to face-to-face delivery, mapped against the College's core psychiatry curriculum blueprint.

The circuit with 4 minutes of reading time typically holds 6 management stations, 1 history-taking station, and 1 examination station. The circuit with 90 seconds of reading time holds 4 history-taking and 4 examination stations. (The College reserves the right to vary circuit order between morning and afternoon).

Across the day, stations divide into three clinical categories:

• History Taking (5 stations): Comprehensive assessment, including forensic, substance misuse, and risk evaluation.
• Clinical Examination (5 stations): Mental state examination, cognitive assessment, assessment of mental capacity, and focused physical examination.
• Management & Communication (6 stations): Explaining diagnoses, treatment negotiation, managing complex discharge planning, and liaising with distressed relatives or MDT colleagues.

Scoring & The Standard to Pass

To pass the CASC, candidates must satisfy two concurrent criteria:

1. The Overall Score: Attain the aggregate borderline-regression pass mark across the entire exam.
2. The Station Count: Pass a minimum of 12 out of the 16 stations.

Crucial warning on severe fails: Two or more severe fails automatically trigger an independent review by the College Examinations Committee, which can lead to an overall fail even if the numeric pass mark and station count were achieved.

Who Can Sit the CASC: Eligibility & Sponsorship

The CASC represents the culmination of the MRCPsych qualification. Every candidate, whether training in the UK or overseas, must meet four standard prerequisites:

• Valid Paper Passes: Passes in Paper A and Paper B that remain valid on the date of the CASC examination.
• Psychiatry Experience: At least 23 months whole-time equivalent (WTE) experience in psychiatry by the time of the exam (post-foundation/internship). Posts must normally last a minimum of 4 months at no less than half-time.
• Medical Registration: Full registration with the UK General Medical Council (GMC) or your national medical licensing regulator outside the UK.
• Authorised Sponsorship: An approved medical education sponsor confirming you meet all training standards.

The UK Trainee vs. Assessment Portfolio Pathway

Doctors in UK approved training programmes demonstrate eligibility via satisfactory progress at their Annual Review of Competence Progression (ARCP), including developmental psychiatry and psychotherapy competencies.

All other doctors—including international medical graduates (IMGs), non-training specialty doctors, and locum psychiatrists—must complete an official Assessment Portfolio. This portfolio must demonstrate competencies equivalent to the UK core psychiatry curriculum, built from observed patient interviews, case presentations, and formal workplace-based assessments (WPBAs). It must include documented competence in psychotherapy and either child & adolescent psychiatry or learning disability.

Who Can Act as Your Sponsor?

Your sponsor must be an appropriate educational lead. Recognized roles include: College Tutor, Training Programme Director (TPD), Educational Supervisor, Clinical Supervisor, Head of School, Director of Medical Education (DME), or the consultant responsible for your appraisal. Your sponsor does not necessarily have to be a member of the College, but the College reserves the right to contact them directly for independent verification.

When and Where the CASC Runs

The next UK sitting runs from 19 to 27 January 2027 at the English Institute of Sport in Sheffield. Applications open on 26 October and close strictly at 3:30 PM UK time on 6 November 2026. Results are published on 4 March 2027.

Capacity & Oversubscription: Places are capped. The January 2026 sitting drew 937 applications for 826 slots. In June 2026, the College updated its allocation policy for oversubscribed diets. Applying early and securing your sponsor's sign-off before the window opens is vital.

International Sittings: In addition to Sheffield, the College runs overseas diets. An overseas sitting is scheduled in Singapore for 1 to 4 June 2027 (application window: 22 February to 5 March 2027).

The 8 Skills Underneath the Stations

While the College groups stations by psychiatric subspecialty (General Adult, Old Age, Forensic, Child & Adolescent, Addictions, Liaison), successful candidates group them by transferable clinical skills. A challenging conversation with an angry relative and a capacity assessment on a surgical ward look completely different on paper, but both hinge on the exact same skill: establishing unshakeable rapport within the opening 60 seconds.

At MedLex, our curriculum deconstructs the CASC into 8 core domains:

1. Communication & Rapport: The foundational grammar of a British psychiatric consultation.
2. Information Giving: Explaining diagnoses and risk so the patient genuinely understands, rather than reciting memorised NICE guidelines.
3. Risk Assessment: The domain where marks are lost fastest and most silently.
4. Mental State Examination: High-yield phenomenology and the precise interview techniques that elicit it.
5. Capacity, Consent & Law: Decision-specific, time-specific, and legally defensible formulation.
6. Management & Acute Emergencies: Handling acute crisis scenarios with calm registrar authority.
7. Difficult Conversations: Navigating angry relatives, serious medical errors, and formal complaints.
8. Physical Examination: Conducting systemic physical checks that psychiatry cannot delegate.

The Mindset: The Question Behind Every Station

The College pegs the CASC passing standard at the level of entry into higher specialist training: ST4 level. When an examiner watches you through the 7 minutes, they are not tallying checkboxes in isolation. They are asking themselves one central, overarching question:

"Would I feel completely confident leaving this candidate in charge of my acute psychiatric ward as my registrar tonight?"

Medical knowledge is necessary for a "Yes", but knowledge alone will never suffice. The examiner is assessing your clinical composure, your safety awareness, and how you connect with a vulnerable human being in 7 disciplined minutes.

Next in this series: Failed the MRCPsych CASC? What to Do Before Booking January 2027.