SAT test preparation books sit on a shelf at a Barnes and Noble store June 27, 2002 in New York City.

Some critics of the SAT argue that GPA is a better predictor of a student's success in college than a standardized test. After last week's news about changes to the SAT (and as families get their high school acceptance notices this week), Eric Hoover, senior writer for the Chronicle of Higher Education, explains how students from different high schools are evaluated, and how much the SAT really matters anyway.