Ross had been enrolled at Ohio State and working out with the team while the university was involved in an appeals process, but the NCAA ruled Monday that Ross is a designated non-qualifier.
Rated as the No. 44 best player by Scout.com in his class, the 6-8, 195-pound Ross cannot remain on scholarship if he stays in school and will not be permitted to continue working out with the team.
Ross has returned to his home in Jackson, Miss.
There was no telling how much the Buckeyes were going to count on the freshman this season, but he was the second-highest ranked incoming freshman behind point guard Shannon Scott.
Ohio State will kick off practice Oct. 14 and will officially begin its season Nov. 11 when it hosts Wright State in Value City Arena.