i letter on Pre-U exams

We are assured by Ofqual that students who have taken the tougher A-level examinations this year "will not be at a disadvantage compared with previous years" (Exam grades adjusted for reforms, 14/08/18). The worry is, however, that they will be at a disadvantage compared with students, mostly from private schools, who take Pre-U exams instead of A-levels. These exams are marked and set by teachers in the private sector, and last year had far higher percentages of students gaining A*/A grades.