If you feel teaching is right for you, great, not trying to discourage you.
But I have to ask, are you currently employed as a school teacher, or is this the job you want when you get done with school?
I caution you, teaching is more than being passionate about a subject. That part is secondary. A lot of aspies have horror stories about trying to teach.
But I guess the music teacher isn't stuck with one class, it's a rotation each day of the different classes, so it's a little easier in that sense.