The ACT recently released a report based upon students interested in STEM (Science, Technology, Engineering, and Mathematics) college degrees. They found that 26% met or were above the STEM readiness benchmark. The STEM score on the ACT is meant to be an indicator of how a student will perform in a first-year college STEM course. More information can be found here: 

The ACT science section is comprised of data representation, research summary, and conflicting hypothesis based questions. The student gathers required information from charts, tables, and graphs. It's good for the student to know the scientific method as well. The ACT math section tests pre-algebra, algebra I, algebra II, geometry, and trigonometry. The more difficult math questions are usually toward the end and so the student must also focus on pacing.