<p>At my school, it goes : freshman: general Physical sciences 1, Sophomores: general biological sciences 2, Juniors: choose between AP Bio, Honors Chem, AP Physics, (the more advanced students do Bio and Physics) Senior:whatever is left over. I chose AP, my forte, in junior year to up my GPA, then H Chem senior year because I needed chemical sciences. Most advanced students, at my school take AP bio junior year. Good question by the way!</p>