If you mean grade school/middles school/high school I would recommend it to someone who feels like it is the better option for them and have ways to keep themselves disciplined enough and have the ability to do the work. I took online classes for the final few years I was in high school due to my first major depressive episode. I did great the first school year, but afterwards I basically gave up due to the depression and had to try to recover from it before I could get back to work. I started to, but by then I should of been graduating and going to college. Due to this, I decided to get my GED instead so that I could go to college rather than being depressed due to being stuck in high school still. I don't regret it because I got to learn a lot about who I am as a person, learn a lot of things on my own due to the independence I had rather than relying on the public school system, and was able to overcome depression during that time period. I don't think it is ideal if you are someone like I was who couldn't moderate himself, but it can work.