Teaching artist not art teacher

An interesting comment was made in last Monday's Fine Arts meeting. Rick Wamer reported that Bobbi McKean of the University of Arizona had mentioned that most of her drama students wanted to be teaching artists NOT drama teachers. I am wondering how this fits in with other parts of the changing world around us. Is this a trend? Could all elementary education be handled with the classroom teacher as a facilitator collaborating with a succession of teaching artists and other professionals? Years ago one of the writers on public schools (was it John Goodlad?) asserted that classrooms were almost useless and could be profitably replaced with a series of well-planned field trips to assorted real world environments. Is the desire of drama students to be teaching artists rather than drama teachers a indication that the isolated classroom is being replaced with an open learning forum?