Do you have any quilts finished? A trunk show to begin with would be a fun start. Then maybe types of fabric, thread, sewing machine needles, and sewing machine maintenance. That is important to know too.
I think that if you conducted a quilt in a day type class, that would be a good start. I taught myself with the Log cabin one from elenore burns. It is a down and dirty, fast way to get a quilt done in no time. If you don't have the book, you could check it out of a library. While you are there, you could look to see if there is anything on teaching quilt making.
Most of what I have learned has been from books and magazines. I have no idea how many years it has taken of reading to get to where I am now.
Safety with a rotatory cutter would be a must and how to use it.
It seems to me that you can go as detailed or as simple as needed. It depends on your time and commitment to teaching.