Regular attendance and chronic absenteeism data for all students enrolled at a school or district during the applicable Cumulative ADM enrollment time frame with at least 10 days of enrollment. Students who transfer between schools or districts are reported separately in each school or district of enrollment. The data are sourced from the applicable Cumulative ADM collection. Students are considered to be regular attenders if they attended more than 90% of their enrolled days. Students are considered to be chronically absent if they were absent 10% or more of their enrolled days.