“…For example, merely 0.5 percentage points of teacher absence separate students of the parents in the lower half of the earnings distribution from the parents in the top 1 percent. This equal exposure by socioeconomic background contrasts evidence from the US (Clotfelter et al, 2009), reflecting a modest degree of school and neighborhood segregation in Norway (Hermansen, Borgen, & Mastekaasa, 2020;Tammaru, Van Ham, Marcińczak, & Musterd, 2015). Despite negligible differences in exposure, teacher absence increases social inequality in long-term educational outcomes.…”