According to ACT Mastery's data, its ACT prep methods help improve the scores of 92% of its students by an average of three points. To do this, the test-prep specialists offer in-person camps and programs and online classes where they teach the skills students will most likely face on the actual ACT. Courses cover math, reading, english, writing, and science topics, yielding overall higher composite scores.

ACT Mastery is the brainchild of Craig Gehring, who achieved perfect scores on both the SAT and ACT in 2003. After news of his scores spread, parents reached out to Craig, and he soon began tutoring fellow test-takers. Since then, he's published SAT ACT Mastery, which explains the methods he used to get his perfect scores, and developed the successful ACT Mastery curriculum.