Most high school athletes looking to play in college can readily rattle off their relevant statistics, be it best times, yards rushing, batting averages, or goals. They'll be able to tell you how often they qualified for the various all-state honors available. But far too many couldn't tell you if they would be an NCAA D1 qualifier for their sport.
A "qualifier" is an athlete who has qualified to participate in NCAA D1 sports by meeting all academic requirements. This means that the athlete has met the minimum required GPA in 16 core classes with a matching ACT or SAT score. D1 uses a sliding scale to determine the require test scores--the lower your GPA, the higher test score required.