When to take the SAT II tests?

<p>My son did Honors Chem last year (he is a sophomore currently). He is taking AP HG and AP NSL and Honors Physics, Honors Bio, Honors Precalc B, etc. I asked him when he is supposed to take the SAT IIs. He seems to have no clue and sounds like his teachers aren't saying anything. My questions: (1) How do you know which SAT II to take--is it the subjects you like the best and (2) when is the best time to be taking the SAT IIs--obviously right after you take the class--I am sure. But any other ideas on this? THANKS!!!</p>