This section explains what an OSCE is and why so many schools rely on it. It is the foundation for every decision in the sections that follow. If your team disagrees about what the exam is for, that disagreement surfaces later. It shows up as a weak blueprint, an unfair pass mark or a dispute over a result.
An OSCE is a circuit of short, timed stations. Each station tests one clinical task under the same conditions for every candidate. Examiners score what they observe against a shared scheme. The design trades the depth of a long case for breadth and fairness. Many short performance samples are judged the same way for everyone.
The section covers where the format came from and how it has changed since the 1970s. It sets out what an OSCE measures well and what it does not measure well. It explains the vocabulary the rest of the guide uses. Station, blueprint, checklist, global rating, standard setting, and reliability each get a plain definition. It also describes the roles involved, from the assessment lead, who owns the exam, to the simulated patient, who plays the same case 40 times in a day.
The people who most need this section are new assessment leads and faculty joining an OSCE committee for the first time. So is anyone who has to explain the exam to a dean, a regulator, or a student council. Read it once. Then use it as the shared reference for your team.