The artist is a strange being. I think it's safe to say that a real artist is conscious of having a personal singularity that is partly a blessing and partly a curse. An artist enjoys and suffers from isolation. As solitude, isolation can nurture. It can also destroy.
Artists are people who are subject to irrational convictions of the sacred.
Baudelaire said that an artist is a child who has acquired adult capacities and discipline. Art education should help build those capacities and that discipline without messing over the child. Everything that would begin to make somebody a good student would tend to make him or her a poor artist, and vice versa. That's who they select. It's certainly a luxury for teaching.