Ruazkaz, I suspect that would work out fine, though it really depends on the workload of your particular courses, Matieral-wise I don’t think any of them are super-tough. Here, the lab requirements would make scheduling both sciences tough, but we know a kid who took AP chem and AP world and self-studied AP bio last year, and it went fine. Also a consideration, here AP world is a considerable amount of work time-wise (a lot of required writing assignments, research, etc that one cant get out of, so a huge time-suck-) but that seems to be teacher/school dependent.