Students walk to and from classes on the campus of the University of Colorado, in Boulder,

BOULDER | The University of Colorado in Boulder says no freshmen are using a housing exemption because they use medical marijuana.

Students walk to and from classes on the campus of the University of Colorado, in Boulder, Colo., Monday April 20, 2015. The University of Colorado is open to the public on this 4/20 marijuana holiday for the first time in three years. The university has blocked public access in recent years in an effort to snuff mass smokeouts to mark the unofficial marijuana celebration. (AP Photo/Brennan Linsley)

The change comes despite CU having a record freshman class.

The Daily Camera reports (https://bit.ly/1Pd3OJS) that the campus requires freshmen to live on campus but will make exceptions for pot patients. Marijuana use is banned on campus.

The school has seen as many as 17 medical marijuana exemptions to the housing policy per year.

CU also allows students who are married or who live with a parent or guardian to apply for an exemption. Freshmen over 21 also are exempt.