I was thinking more of a high school job or a professorship at a school, not like Chris Potter giving lessons at NYU.musicman5string said:I'm pretty sure you could get a job teaching anywhere if you were an amazing player and didn't have any degree at all.
I won't name any names but you know there are alot of them teaching at major universities right now. Does it matter? Hell no. I'd rather study with someone who can play the instrument than someone that met the requirements to have a piece of paper that says they are qualified to teach.
If that is the goal, then only do performance and just write on the side. But if he wants to teach high school, or get some type of professorship at a college, I would suggest that the Music Ed. degree would help.