Can anyone tell me their SAT Biology practice tests compared to their real score? I’m worried about Barron’s especially since I just took a practice test and got ~680 
When I took bio I was consistently scoring 700 on the practice tests I was taking. I can’t remember whether the test was Princeton or Barron’s though. Anyway, when I took the test, I got a 760, which goes to show you how terrible practice tests are at gauging how well you’re going to do. Barron’s especially are much harder than the normal test. I wouldn’t stress, you’ll probably do fine.