The SCE does not use a fixed percentage pass mark. Instead, it uses a method called statistical test equating (sometimes called standard setting or Angoff method) to set the pass mark for each sitting independently.
What test equating means
Test equating is a statistical technique that adjusts the pass mark to account for differences in question difficulty between sittings. If one sitting happens to contain slightly easier questions, the pass mark is set higher. If the questions are slightly harder, the pass mark is set lower. The goal is to ensure that the standard required to pass remains consistent across sittings, even though the specific questions change.
In practical terms, this means you do not need to answer a fixed percentage of questions correctly. You need to demonstrate a consistent level of knowledge as determined by the equated standard. The exact pass mark (expressed as a number of questions correct) varies between sittings and is not published in advance.
Why pass rates change between sittings
Because the standard is fixed but the candidate cohort changes, the pass rate fluctuates. A sitting with a stronger cohort (more UK trainees, more first-time candidates with structured preparation) will produce a higher pass rate. A sitting with a weaker cohort (more international candidates, more resitters) will produce a lower pass rate. Neither sitting is easier or harder — the standard is the same.
What this means for your preparation
Focus on your own knowledge level, not on predicting the pass mark. The most reliable preparation strategy is to complete enough practice questions to identify and close your knowledge gaps, then verify your readiness through mock exams. If you are consistently scoring above 65 to 70 per cent on well-calibrated practice questions across all topics, you are likely performing above the equated pass standard.
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