Table 1 . Determinants of Course Grades ( 1 ) (2 ) (3) grade grade grade grade Ohio resident -0.DID 0.007 0.0.07 0.DOG ( 0.0.05 ) ( 0.0.05 ) 10.0.05 ) ( 0.0.05 ) High School GPA 0. 570 0. 483 0. 484 0. 484 ( 0.0.06 ) ( 0.0.07 ) (10. DOT ) ( 0.0.07 ) Female* 0. 168 0. 198 0. 275 0. 275 ( 0.0.05 ) 10.0.05 ) ( 10.038 ) (0.038 ) ACT score 0.023 0.024 0.025 ( 0.0.01 ) ( 10.001 ) (10.001 ) Female* ACT score - 0.0.03 -0.0.03 (10.001 ) 10.0.01 ) Number of semesters at 0.0121 Miami 10.0.02 ) Squared number of -0.00 Z Semesters at Miami 10.00 0 ) Constant 1.009 0. 694 0. 652 0. 6014 ( 0.0123 ) ( 0.023 ) 10.032 ( 0.033 ) R Z 0.097 0. 103 0 . 103 0. 104 Residual Sum of 103772 6.991014 `9.9075 5.98535 Squares Total sum of squares 179560 179560 779560 179560 Observations 103631 1 103631 1 103631 1 103631 1! Standard errors in parentheses Dependent Variable is course grade which ranges from ! IF , to $ 1 MOTH TI