Experimental Design
We randomly assign 112 schools (in 112 distinct subcounties) across Uganda to a pure control group or one of two treatment arms: (1) volunteers only and (2) volunteers plus a fellow, stratifying on district. Within each school, we measure enrollment, attendance, literacy, and numeracy for P4 ("primary four") students. When a P4 class is too large for all students to be surveyed, we randomly draw 20 students for participation in the study.