. This study estimates the effect of class size on academic performance of university students, distinguishing between STEM …,000 students and a total of more than 190,000 observations, spanning six cohorts of first-year undergraduate students across all … the effect along the dimensions of students' socio-economic status, ability, and gender, finding that in STEM disciplines …

, we exploit a unique setting where students are randomly assigned to faculty advisors during their first year of college … four-year graduation rates. Additionally, higher advisor VA increases high-ability students' likelihood of enrolling and …