There is mounting evidence of substantial "teacher quality gaps" (TQGs) between advantaged and disadvantaged students, but practically no empirical evidence about their history. We use longitudinal data on public school students, teachers, and schools from two states--North Carolina and Washington--to provide a descriptive history of the…

Background/Context: In most judicial and social science debates about school desegregation, it is usually assumed that educational and social benefits, if significant, help establish a compelling purpose for school desegregation plans. Less thought has been given to whether the degree of benefits should factor into whether a plan is narrowly…