How your practice score works
The Grand Mock Practice Score is a simple learning index, not SCFHS-calibrated. It does not predict your official score, percentile, pass probability or residency outcome.
The formula
Practice accuracy = correct answers divided by all questions in the attempt, multiplied by 100. Unanswered questions count as incorrect.
Practice index = 200 + 6 × accuracy percentage
For example, 70 correct answers out of 100 means 70% accuracy and an index of 620. The official score range uses the same endpoints, but this does not establish equivalence.
Official results are different
The SCFHS guide reports a 200 to 800 scale and a passing standard of 560. There is no validated fixed conversion from our practice percentage to an official result.
Use the feedback
Track fresh-question accuracy, weak topics and pacing. Repeated questions are useful for learning, but compare fresh sets separately. Difficulty labels do not provide psychometric calibration.
Explore the practice calculator