You might want to check out the job market first, and think about what
age(s) you want to teach. In some states, like California, a lot of extra
college time is expected to receive a credential, but there are almost NO
positions for elementary specialists. Jr. High and High School jobs a often
full time... or at least five days a week. This can be a big life-style
change if you are used to working full days in your studio. It is a
demanding profession, but also very rewarding.
An addendum to the teacher-training tirades: I agree about the ivory-tower
training. NEAE membership, and their publications, as well as those from
the Getty, should be REQUIRED. With that, and the wonderful material
presented on this listserve, you could learn everything I got from my Art
practicum. (Amusing aside - my supervising professor was a teacher of
BUSINESS ED and always looked a lttle shell-shocked after leaving his
observations of art class. His comments always had a "better you than me"