NCAA Division I FCS

Division I (D-I) is the highest level of intercollegiate athletics sanctioned by the National Collegiate Athletic Association (NCAA) in the United States. D-I schools include the major collegiate athletic powers, with larger budgets, more elaborate facilities, and more athletic scholarships than Divisions II and III as well as many smaller schools committed to the highest level of intercollegiate competition.

This level was once called the University Division of the NCAA, in contrast to the lower level College Division; these terms were replaced with numeric divisions in 1973. The University Division was renamed Division I, while the College Division was split in two; the College Division members that offered scholarships or wanted to compete against those who did became Division II, while those who did not want to offer scholarships became Division III.

For football only, Division I was further subdivided in 1978 into Division I-A (the principal football schools), Division I-AA (the other schools with football teams), and Division I (those schools not sponsoring football). In 2006, Division I-A and I-AA were renamed "Football Bowl Subdivision" (FBS) and "Football Championship Subdivision" (FCS), respectively. FBS teams are allowed a maximum of 85 players receiving athletically-based aid per year, with each player allowed to receive up to a full scholarship; FCS teams have the same 85-player limit as FBS teams, but are only allowed to give aid equivalent to 63 full scholarships. FCS teams are allowed to award partial scholarships, a practice technically allowed but essentially never used at the FBS level. FBS teams also have to meet minimum attendance requirements (average 15,000 people in actual or paid attendance per home game), while FCS teams do not need to meet minimum attendance requirements.

Another difference is post season play. Since 1978, FCS teams have played in a college football playoff system to determine a NCAA-sanctioned national champion; the FBS teams play in bowl games where various polls rank the number one team after the conclusion of the bowl games. Starting with the 2014 postseason, a four-team playoff called the College Football Playoff, replaced the previous one game championship format. Even so, Division I FBS football is still the only NCAA sport in which a yearly champion is not determined by an NCAA-sanctioned championship event.

...
Wikipedia