No participation means that the student is not enrolled in any courses of one or all courses and maybe to Dodge around the school or school grounds, which is done by intention.
No entry means that the student is not enrolled in any course of study or any course and may be hiding in the school or outside of school, a deliberate act.
No admission means that students do not attend any course of one or all users and subjects may be hiding in the school or the school which to commit crime .