K-12 and On-line Learning

I know just a little about online learning in K-12, but a lot about it when it comes to college on-line courses. In my CTE automotive classes have to use on-line course work to meet the national program certification. The things that I have found out about using this is that 1. it delivers the theory curriculum better then I can 2. it is self passing for the students and 3. it can be worked on 24/7 by all students. I do feel that on-line courses have a place in K-12 education, but they cannot be a replacement for K-12 school setting. Students still need to be around other students and learn basic people skills. These are my thoughts on on-line education in K-12, what are yours?