<p>I just finished AP Biology this past school year, and I was hoping to take the Biology M Subject Test in October...would you say it's been too long and I would've forgotten too many details and it's better off taking another test?</p>
<p>I would probably use Barron's AP Biology book, 5 Steps to a 5, Barron's Subject Test review and/or PR Subject Test review. </p>
<p>Thank you so much!</p>