<p>Okay, so in Sophomore year, I took SAT II Bio expecting to do well, but I placed 690, a bad score. I planned to retake it this year, but I haven't had time to study for it because I had other exams. I have heard that no tests can be taken September and the last date before ED is October. </p>
<p>Unfortunately, I have to retake my SAT I's in October, so I'm looking for June for my Subject Tests. I'm interested in taking SAT II Chemistry in June as studying for the AP exams should help me in SAT II. I'm also interested in taking Math II C, which my Pre-Calculus course should assist me in doing well. However, I am unsure whether I should retake Bio. I am definitely aiming to apply to an Ivy-League school, which I have heard requires 3 subject tests. Should I retake Bio? Is is worth the risk? Can I study for the 3 within a month?</p>