The data point on preschool discipline was a new question asked of districts for this data collection, which represents statistics from the 2011-12 school year. Schools representing nearly all of the nation’s public school children were surveyed as part of this collection (in contrast, the department released results of a civil rights data collection in 2012, but that represented about 7,000 districts.)
Other preschool suspension data: white students make up 43 percent of children in preschool, but 26 percent of students suspended. Boys are 79 percent of the preschool children suspended once, and 82 percent of preschoolers suspended multiple times (boys make up about 54 percent of overall preschool enrollment.)