If an article is assigned 120 uniform points, the range of grades assigned to grade B is 84 to 95 (70 to 79% of 120); for grade C, 72 to 83 (60 to 69% of 120). Students pursuing science will take one or more separate sciences (biology, chemistry, and physics) or combined sciences. GCSE grade limits tell us the number of gross grades a student must achieve to receive a given grade. Students will study biology, chemistry, and physics, but will not cover as much content as those students in separate sciences.
This would be common with most year 7 students, since a grade 3 in year 7 is not fully equivalent to a gcse grade.