Despite great focus on and public investment in STEM education, little causal evidence connects quantitative coursework to students’ economic outcomes. I show that state changes in minimum high school math requirements substantially increase black students’ completed math coursework and their later earnings. The marginal student’s return to an additional math course is 10%, roughly half the return to a year of high school, and is partly explained by a shift toward more cognitively skilled occupations. White students’ coursework and earnings are unaffected. Rigorous standards for quantitative coursework can close meaningful portions of racial gaps in economic outcomes.

Most research on online education compares student performance across online and in-person formats. We provide the first evidence that online education affects the number of people pursuing education by studying Georgia Tech’s Online MS in Computer Science, the earliest model offering a highly ranked degree at low cost. A regression discontinuity in admission shows that program access substantially increases overall educational enrollment. By satisfying large, previously unmet demand for midcareer training, this program will boost annual production of American computer science master’s degrees by at least 7%. Online options may open opportunities for populations who would not otherwise pursue education.

Does access to 4-year colleges affect degree completion for students who would otherwise attend 2-year colleges? Admission to Georgia’s 4-year public sector requires minimum SAT scores. Regression discontinuity estimates show that access to this sector increases 4-year college enrollment and college quality, largely by diverting students from 2-year colleges. Access substantially increases bachelor’s degree completion rates for these relatively low-skilled students. SAT-retaking behavior suggests students value access to 4-year public colleges, though perhaps less than they should. Our results imply that absolute college quality matters more than match quality, and they suggest potential unintended consequences of free community college proposals.