The more the skill is performed, the more automatic and fluent the performance becomes. Students scoring highly on knowledge tests cannot expect to score highly in OSCEs. There is a correlation but not a strong one. Most medical schools set their OSCEs at minimal competence levels. The test is not designed to identify brilliance.
Many students set very high standards.
OSCE results can be disappointing. Very few students pass all the stations. Some of those who failed one or two stations did better overall than these 12. Do not be disappointed. The box sets out the key issues in passing the OSCE test.