In 1978 it was just four teams.
It was doubled to eight teams in 1981.
In 1982 it expanded to twelve.
Expanded to sixteen in 1986.
In 2010 it expanded to include twenty.
In 2013, the FCS playoffs will expand to 24 teams.
There are approximately 119 College Football teams.
2011 2 teams Princeton St. Peter's College
Zero
2011 2 teams Princeton St. Peter's College
The original NCAA Division 1 College Basketball Tournament 1939 field consisted of 8 teams.
67
39
Eleven
23
5
There are 336 teams in men's college basketball.
Over the years the NCAA tournament has expanded to include more and more teams. Today, the total number of teams that make the tournament stands at 68.