I am an elementary art teacher for grades 1-5 and I like your idea a lot. It
could be initiated very simply - just by sending home a child-decorated
portfolio early in the school year, with first projects already in it, and a
letter of explanation. Parents and classroom teachers could be brought along
to the idea at their own speed, with art teachers being prepared to meet with
interested parents whether classroom teachers did or not. This would also
help bring art teachers into contact with parents.