<p>When you send in your SAT report, any and all SAT IIs you have taken will be sent. You can take as many as you want really, UCSD will only look at the two highest scores in that group. Back in the day I had taken two SATs, two ACTs, and four SAT IIs…The ACT was my highest score, so they converted the ACT score (32 or so) into an SAT equivalent (around 2100-2200 or so). Then with the SAT II’s I took Bio e/m, Math II, and Lit…My highest two scores were bio e and Lit, so those were the only two that UCSD took into consideration. Long story short–take as many of these tests as you want, they will only look at the best. I suggest taking the ACT if you feel unsatisfied with your SAT score, in the end they will both be converted into SAT scale and people generally find the ACT easier, just dont forget to take the writing portion with it.</p>