Absent: Student is marked not present at school, for either unexcused or excused reasons. According to the state attendance policy, a student who is absent for half of the school day should be marked absent. 

Excused absent: A student is absent due to excused reasons. This requires documentation. However, what constitutes an excused absence is determined by district policy*

Unexcused absent: A student is absent due to unexcused reasons. District policy defines an unexcused absence*

Truancy: Refers only to unexcused absences.

Average Daily Attendance rate: The percent of enrolled students who attend school each day.

Chronic absenteeism: Overall absence rate greater than 10%

 Please refer to page 10 of the Student Handbook for the District's attendance policy. 
http://www.millingtonschools.org/UserFiles/Servers/Server_90441/File/Student%20Services/Student%20Handbook%2016-17(8.8.16).pdf