<p>You’re a junior, I’m assuming? I wouldn’t waste my money on late registration if I were you… isn’t the next test date in March? That would give you much more time to study, and you would probably score 750+ on all of them, depending on how strong you are at these subjects.</p>
<p>Before you sign up (before the late registration deadline), take a practice test in all of these subjects (Princeton is fairly accurate most of the time) and see where you’re at. Unless you score 700+ on all of them, I would wait it out until March.</p>
<p>If you didn’t already know, Math 2 has the most lenient curve and is easy to score high on for most skilled math students. If you’re already strong at Math, then you should be able to manage Barrons, which is the most supported Math 2 prep book on this site, despite it being significantly harder than the real exam. </p>
<p>For Biology, a Barrons + Princeton Review combo is apparently most ideal, but a thorough review of either should yield a high score if you’re a natural at Bio and just need an review.</p>
<p>Sorry, didn’t take Chem, so I don’t really know.</p>
<p>So yeah… tl;dr : Barrons for Math, Barrons (and/or but preferably and) Princeton review for Biology. For Math, take the diagnostic test first and pinpoint your weak areas. You can come back and post your score for advice on where to go from there, but anything 700+ on a Barrons exam is considered very good. Your studying should mainly consist of taking practice tests under timed conditions and CAREFULLY REVIEWING all of your wrong answers or answers you guessed right. For Biology, just carefully read the prep books, maybe several times through.</p>
<p>Obviously more time would be better./. I also don’t recommend (although you can wait for a second opinion) that you take Chemistry until the end of this school year (May/June). You haven’t covered all the concepts and I would not count on it being easy to learn the rest of the concepts you haven’t covered yet.</p>
<p>my tl;dr was pretty useless since I just went on further… but yeah.</p>