As the name suggests, and owing to its level of difficulty, this paper can only be sat in the Summer term of Year 13. Entry fees are reasonable and similar to those charged for A-Levels. The final grade on a STEP is collated from the best six answers on the paper. A correct answer automatically achieves full marks, regardless of the method used to get there, and the marking system is designed to reward “good progress” towards answering a question. Scores are given on a 5-level grading system, going from S (Outstanding) to U (Unclassified), with grades of 1, 2 and 3 in-between representing “Very Good”, “Good” and “Satisfactory” respectively.