Classroom teachers in the United States are absent on average approximately 6 percent of a school year. Despite the prevalence of teacher absences, surprisingly little research has assessed the key source of replacement instruction: substitute teachers. Using detailed administrative and survey data from a large urban school district, we document…

Using detailed data from North Carolina, we examine the frequency, incidence, and consequences of teacher absences in public schools as well as the impact of a policy designed to reduce absences. The incidence of teacher absences is regressive: when schools are ranked by the fraction of students receiving free or reduced price lunches, teachers in…