africanamericans casestudies chicagometropolitanarea children'sstudies discrimination discriminationineducation education educationalequalization elementaryschoolprincipals ethnicstudies general history illinois iowa minorities multiculturaleducation post-racialism racediscrimination racerelations racismineducation schoolintegration schoolmanagementandorganization segregationineducation soc047000soc031000edu020000soc008000 socialaspects socialclasses socialscience unitedstates