Getting a Higher ACT Math Score

My younger son took his ACT for the second time in early February. He got a decent score the first time, but in the hope of getting better scholarship offers elected to take it again to try and increase his math score (and bump up his composite as well).
He took it originally in April 2017 as a sophomore and got a 28 in math with a 32 composite. He was taking Thinkwell online Geometry at the time. This year he is taking Thinkwell Trigonometry (which begins with a massive Algegra 2 review!).  I am not affiliated with Thinkwell, we just really like their upper-level math courses for homeschool.

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We had the first edition of this McGraw-Hill 50 Top Skills for a Top Score ACT Math  (the second edition is out now) that his brother had used with some success when he was in high school and so thought it would be a good way to try and increase his math score. There are 50 lessons to cover 50 key ACT math concepts and strategies. He signed up for the February 10, 2018, test. By the time we recovered from the holidays and a family vacation, he had three and a half weeks to study; practically speaking he had 22 days. I challenged him to cover at least three lessons a day on top of his regular schoolwork. He had Sundays off and at least one camping weekend during this time, so he usually did four lessons a day.
Test day came and went, and I knew the scores usually come out the second Tuesday after the test Saturday so was really planning to check first thing on the 20th but got busy and forgot!
It was a couple of days after the scores were up before I remembered to look.
Mission accomplished! He managed to score 33 on the math section, which was a gain of five points! His other scores were comparable to last time, so his composite went up to a 34. I went and woke him up to show him the scores on my laptop screen. He was less excited than I expected.
😀
This book is available on Amazon.
His method was simply working through the lessons in order, but this includes a CD with two extra practice tests (recommended), a pre-test and post-test, and cut out flash cards.  These images are from our book, which is a few years old.  The one linked above on Amazon is the new second edition.

I should say that no matter how good the prep materials are, you won’t get a good result without a lot of time and effort.   Your results may vary!

I think his Thinkwell Trig course with the Algebra 2 review included helped but the prep book was a HUGE factor in improving his score.  We highly recommend it!