keeps BYU is that it is a place where the future leaders of the Church are developed and , second, the university cannot take all worthy LDS students who want to go there and who could succeed there. Someone who has left the Church and stays there is taking the place of someone who is still faithful and would work to build the Kingdom. Why keep the unbeliever? Also, tuition only pays for ac third of the cost, the church pays the rest, so they get to decide who should receive that blessing.