Summary histogram plots for the top 200 districts by population size. Results show that merging (pairing or tripling) schools might increase median travel time for students who would be switching schools from 4.5 to 8.3 min, and decrease median segregation (dissimilarity) across the depicted districts from 0.41 to 0.33 (⁠$−20%$⁠). a) Dissimilarity. b) Travel times for students who switched.