@ gavdgradd - I'll be the first to say what everyone's thinking ..... Really? You don't speak for me. We do exactly the same as macdiploma except we start the OCR course in September in year 10. We run the course as an opportunity to stretch and challenge the high flyers. We had 17 sit the exam this year. 4 got an A, 8 got a B and the rest were Cs and Ds. The AS OCR computing course is a excellent course. The syllabus is very clear. There are lots of resources There is no coursework so no pressures from that direction, and contrary to what some are saying here, I agree that it ain't that much more difficult than the GCSE Computing course also run by OCR. Paper 1 is on a par. The programming is a little more challenging (the second paper) but as I said, we run it for students are really into their computing and are well motivated. That's a grammar school for you though!