Is it ever a good idea? DS is in year 12 doing 4 AS subjects and he is now sure which subject he wants to drop at the end of this year. He did really badly in the January module and has enrolled for a resit in May. But I'm just wondering if it might be sensible to just write this subject off and focus his energies on the 3 subjects he's sure he wants to do to A2. Still do the exams in that subject of course and do some revision, but not waste his time trying to get a good result in a subject he finds hard to the detriment of the others, Would that be silly? Would it backfire when it comes to doing university applications?