"Student defined. To qualify as a student, your child must be, during some part of each of any 5 calendar months of the year:
A full-time student at a school that has a regular teaching staff, course of study, and a regularly enrolled student body at the school, or
A student taking a full-time, on-farm training course given by a school described in (1), or by a state, county, or local government agency.
The 5 calendar months don't have to be consecutive.
Full-time student. A full-time student is a student who is enrolled for the number of hours or courses the school considers to be full-time attendance.
School defined. A school can be an elementary school, junior or senior high school, college, university, or technical, trade, or mechanical school. However, an on-the-job training course, correspondence school, or school offering courses only through the Internet doesn't count as a school."
So, if your child was in high school during 2015 for at least one day during each of five months of the year, that child is a full time student.
