Final answer:
University grades are used to gauge the predictive validity of the SAT, which measures the test's ability to forecast a student's GPA in their freshman year of college.
Step-by-step explanation:
University grades are the criterion for the predictive validity of the SAT. Predictive validity refers to the test's ability to effectively predict the GPA of college freshmen. Research has shown that SAT scores have a high predictive validity when it comes to forecasting first-year college students' GPA, although some studies contest the magnitude of this validity. Furthermore, university admissions often use standardized test scores such as the SAT and ACT to predict the relative success of students based on the strong correlations between these scores and college GPA.