My DS scored a 35. He prepared by using the following:
- Science - For the Love of ACT Science; this is an excellent book that will help shift your approach for the science section (keep note there is a very small amount of basic content that is required, but this will only show up for 1-2 questions max)
- English - Erica Meltzer (you already have 35 English, so you can focus on other subjects)
- Math - CollegePanda ACT Math by Neilson Phu
- Reading - Erica Meltzer
He then took practice tests from the Red Book and analyzed each of his missed questions carefully, keeping log on a google document.