Best ACT prep book?

<p>Got a 29 with Barron's ACT prep book but I need a 31 for automatic admission to one of my schools.
Any recommendations?
I need help specifically in math/science as my reading and writing scores where high.
Especially science.. Only got a 19 and only a 22 in math..</p>

<p>I used the Official ACT book. I got it for 50 cents at a garage sale though. I appreciated that it included real ACT tests from the past I could time myself on. Maybe you can borrow from a friend? I think the science section is less about knowledge and more about familiarizing yourself with the format of the test itself. Try some of the free questions on the ACT site?</p>

<p>A lot of people recommend Princeton Review’s “Cracking the ACT”. I haven’t used it yet, but as soon as I get some money I am going to buy it. The Red Book of ACT tests is also highly recommended.
Are those scores from the Barron’s practice test? Or an actual ACT that you took studying with Barron’s?</p>