when should I take psat sat act and sat2

Test Preparation
1

<p>Im a freshman with a 4.0 gpa and ranked 1st in my grade (I dont know if this matters) .when should I take psat act and sat? Should I start sat as a sophomore or what? I know that Harvard requires sat2. Im interested in law and biology as well as mathematics ( I know completely unrelated) what and when should I take these sat2s?</p>

2

<p>PSAT–beginning of soph and junior years
SAT–beginning of junior year, end of junior year (if you want), beginning of senior year (if you want)
ACT–if you want to take this instead of the SAT just replace those times
SAT 2 bio–after you take ap bio (end of soph year?)
SAT 2 math 2–after you take precalc h (end of soph/jun year?)</p>