harms students' human capital accumulation. The economics literature has largely ignored the reasons for and desirability of … researchers make higher education more costly for low-ability students than do non-research faculty, achieving the separation more …

introductory microeconomics between one semester in which students were randomly assigned into the formats and another semester … when students were allowed to choose their format. In each semester we offered the same course with the sections taught at … effect of format. Students in the compressed format of the randomized arm of the study scored -0.19 standard deviations less …