Members of a junior varsity team are underclassmen determined by the coaching staff to have less experience or ability than those on the varsity roster. As such, junior varsity teams are used to prepare these athletes to compete at the varsity level. In other schools, the line between JV and varsity is arbitrary, with all players at a certain grade level (usually seniors and, in smaller schools, juniors) at varsity and all others below that grade level at JV, with only a few exceptions for highly talented (or well-connected) student athletes, or much smaller schools where - due to their low enrollment - are limited in the number of upperclassmen athletes.
Based on the above text, what's the best answer to this question: can a senior in high school play junior varsity?
yes