Maybe I just guessed really well, but I thought the OAT was pretty easy compared to the MCAT I took a few years ago. I have a feeling that undergraduate major has a large influence on OAT scores. I am a chem major with a physics minor so the GC, OC, Phys sections were the ones I thought I'd do best on. It turns out they were my worst (400, 340, 340) and the bio, rc, qr were my best (390, 400, 380).
I have only taken 1 semester of college biology so I really have no idea how that wasn't my worst subject. I wish I could see my raw scores... I think a 340 in physics really means that I got about 70% of the questions right which doesn't seem so good when you look at it that way.
Are most optom applicants biology majors?