The decision to make sororities and fraternities wait until spring to recruit members is one part of a strategy that the University of Colorado hopes will transform the school's hard-partying image.
Officials say a crackdown on substance abuse has led to more suspensions of students. The school changed its three-strikes policy to two strikes -- meaning students can be suspended for their first or second violation.
School officials say that delaying fraternity and sorority rushes will give freshman more time to get used to college.
Last fall -- a freshman pledge to a fraternity died after he and other pledges were told to drink as part of an initiation ritual.
The university was also rocked last year by a football recruiting scandal. Investigations didn't turn up evidence that sex and alcohol were used to entice football recruits -- but changes were made in oversight of the athletics department.