SAT Bio M

What practice book should I buy to study for Bio M? Also, is it worth taking 3 subject tests? I got a 800 in Math 2 and expecting an 800 in bio as well? None of the colleges I am applying to require more than 2 subject tests.

Well I can’t actually say as I sit the test in June, but from my own studying I like the Princeton Review because it has an informal tone which means I enjoy reading it, and I like Barrons because it’s concise and no-nonsense.

As for your other questions I think you’ve answered them yourself really.