The NCAA has put Oklahoma State's football program on a year of probation for failing to follow its own drug-testing policies.
The Committee on Infractions also ordered Oklahoma State to suspend its Orange Pride student group after determining its all-female membership violated recruiting rules.
The penalties follow a Sports Illustrated expose in 2013 that included allegations of widespread misconduct. The NCAA and Oklahoma State said last October that the allegations were "fundamentally unfounded."
The NCAA said five football players competed in a total of seven games from 2008-2012 when they should have been benched for violating drug policies.
The NCAA said the school was not guilty of failing to monitor its football program, a violation that could have brought more severe penalties. It agreed with the school's self-imposed recruiting limits.
