<p>I think the math review is Great, and the Science review is more extensve than most other prep books?</p>
<p>But a week before the test, should I switch over to Princeton Review (while, of course, still using the official red book)</p>
<p>Princeton review is good for test taking strategies and ‘making the most’ out of your score in terms of process of elimination among other things.</p>
<p>However, it does not cover the material itself very thoroughly. You’re not going to ace the math test by reading the PR for instance.</p>
<p>For a week before the test, i’d take all the practice tests out of the Barrons, then the PR, then the real ACT in that order. You’ll cover some practice material and go into the test with a good notion of what it’ll be like since ‘the red book’'s tests are extremely close to the real thing.</p>