<Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2018) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2018) (Learn how and when to remove this template message) </Td> </Tr> <P> Games are played in four quarters of 10 (FIBA) or 12 minutes (NBA). College men's games use two 20 - minute halves, college women's games use 10 - minute quarters, and United States high school varsity games use 8 minute quarters . 15 minutes are allowed for a half - time break under FIBA, NBA, and NCAA rules and 10 minutes in United States high schools . Overtime periods are five minutes in length except for high school, which is four minutes in length . Teams exchange baskets for the second half . The time allowed is actual playing time; the clock is stopped while the play is not active . Therefore, games generally take much longer to complete than the allotted game time, typically about two hours . </P> <P> Five players from each team may be on the court at one time . Substitutions are unlimited but can only be done when play is stopped . Teams also have a coach, who oversees the development and strategies of the team, and other team personnel such as assistant coaches, managers, statisticians, doctors and trainers . </P>

How many quarters does a college basketball game have