What I Know For Sure...About K-12 Learning

Well, after I thought about it, I guess I don't know that much about K-12 learning.  I know that students take all or most of their classes on line.  But aside from that, I guess I don't know what else is involved in K-12 learning.  I would imagine that students are expected to do assignments by a specified time.  I would also think that teachers would have to have specific training to teach on-line classes.  They would probably also have to do some continuing education to keep abreast of what's new in technology.