In basketball, a rebound is the act of gaining possession of the ball after an unsuccessful field goal or free throw. Players on this list have all recorded 30 or more rebounds in a single game. The NCAA did not split into its current divisions 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 1973, colleges were classified as either "NCAA University Division (Major College)" or "NCAA College Division (Small College)". Additionally, the NCAA recognizes two different eras in college basketball history when it comes to the statistic of rebounding: the pre-1973 era and the post-1973 era. In the pre-1973 era (otherwise known as the era before the d