What are the average score gains from different SAT test preparation courses and programs?
a. Clayton (1998) found test takers gained 6 to 12 points on the verbal section and 13 to 26 on the math portion
b. The National Association for College Admission Counseling study found students improved by an average of 30 points
c. The College Board reported studying for 20 hours on Khan Academy's SAT Practice is associated with an average score gain of 115 points
d. The National Association of College Admission Counseling study found SAT prep courses raised critical reading scores by about 10 points and math scores by about 20 points
