The NCAA and university collaborated on the investigation, which found that the program failed to adhere to school and NCAA rules on recruiting and drug testing. Oklahoma State self-imposed penalties in October, and the NCAA's ruling expanded on the Cowboys' self-punishment.
Oklahoma State's yearlong probation will run from Friday until April 23, 2016. The NCAA also said that the program can no longer use the Orange Pride organization to help recruit prospects, and that the school is not allowed to use student groups for recruiting purposes for four years.
As part of its self-imposed punishment—which was largely adopted by the NCAA—the Cowboys will only host up to 30 official visits during each of the next two academic years. The number of coaches allowed to participate in off-campus evaluations will also be limited, and evaluation days in both the fall and spring will be reduced by 10 days.
In addition, the program was fined $8,500.
Oklahoma State finished 7-6 in 2014.
In 2013, Sports Illustrated published a series of articles investigating Oklahoma State's football program. Most of the allegations contained in the articles took place beyond the NCAA's statute of limitations.