Unified school districts with 4 or fewer traditional public schools, elementary districts with 3 or fewer, and secondary districts with 2 or fewer.Unified school districts with 5-8 traditional public schools, elementary districts with 4-5, and secondary districts with 3-5.Unified school districts with more than 8 traditional public schools, elementary districts with more than 5, and secondary districts with more than 5.School-level data from U.S. Department of Education National Center for Education Statistics, “Elementary/Secondary Information System (ELSi)” (2013-2014).Unified school districts with more than 8 traditional public schools, elementary districts with more than 5, and secondary districts with more than 5.