NCAA Football Bowl Subdivision independent schools are four-year institutions whose football programs are not part of an NCAA-affiliated conference. This means that FBS independents are not required to schedule each other for competition like conference schools do. There are many fewer independent schools than in years past; many independent schools join, or attempt to join, established conferences, usually in order to gain a share of television revenue and access to bowl games that agree to take teams from certain conferences, and in order to help deal with otherwise potentially difficult challenges in scheduling opponents to play throughout the season.