It is highly recommended that students use Khan Academy to study for the SAT. “Studying for the SAT for 20 hours on Khan Academy is associated with 115-point average score increase. ...” Kahn Academy. You will get personalized practice recommendations on your test results from the SAT and PSAT. In addition, Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. They tackle math, science, computer programming, history, art history, economics, and more.