In basketball, points are the sum of the score accumulated through free throws and field goals. In National Collegiate Athletic Association (NCAA) Division I basketball, it is considered a notable achievement to reach the 1,000-points scored threshold. In even rarer instances, players have reached the 2,000- and 3,000-point plateaus. The top 25 highest scorers in NCAA Division I men's basketball history are listed below. The NCAA was not organized into its current divisional format until August 1973. From 1906 to 1955, there were no classifications to the NCAA nor its predecessor, the Intercollegiate Athletic Association of the United States (IAAUS). Then, from 1956 to spring 1973, colleges were classified as either "NCAA University Division " or "NCAA College Division ".