The FCS stands for the NCAA Division I Football Championship Subdivision. It began in 1978 as NCAA Division I-AA and in December 2006, became known as FCS. The FCS is the highest level of NCAA collegiate football to determine its national champion through a comprehensive playoff system. 

There are 13 conferences representing 129 teams. In 1978, there was a 4-team playoff. As of 2013, the playoff expanded to a 24-team format with 10 automatic qualifiers and 14 at-large.  In 2025, the Ivy League will be an automatic qualifying conference for the first time. 

Since 1978, 23 different teams have won the FCS championship. North Dakota State has won the most titles (9) to-date. 

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Variations of the above content derived from NCAA.com