There are no quarters in college basketball games because they feature a first half and a second half. In other basketball leagues, four quarters of varied lengths are common.
College basketball has a long and illustrious history, and since the rules were defined, the game has been played with a first and second half. Each half lasts 20 minutes, for a total of 40 minutes in non-overtime games. International basketball games are divided into 10-minute quarters and last 40 minutes. The NBA employs four 12-minute quarters to create a 48-minute game. High school games are also played in quarters, but they are frequently shorter than 40 minutes.