Chance Comanche left school in before his junior year to play in the NBA. The reason he left is that he feels he is ready to play on the next level and had nothing to do with his academic status. He could have come back to Arizona to continue his college career if he wanted too.
It was purely his decision and his family stood behind him, he felt it was best for him to make the jump now.
What does it matter now, anyway? At this point what is best for everyone is Comanche being successful.