The use of lotteries is advocated to desegregate schools. We study lottery quotas embedded in the two most common school choice mechanisms, namely deferred and immediate acceptance mechanisms. Some seats are allocated based on merit (e.g., grades) and some based on lottery draws. We focus on the...

The Chicago Board of Education is implementing a centralized clearinghouse to assign students to schools for 2018-19 admissions. In this clearinghouse, each student can simultaneously be admitted to a selective and a nonselective school. We study this divided enrollment system and show that an...

A vast majority of the school choice literature focuses on designing mechanisms to simultaneously assign students to many schools, and employs a “make it up as you go along” approach when it comes to each school’s admissions policy. An alternative approach is to focus on the admissions...