Yes, you’re right. It is impossible to determine which is the best online high school. That being said, I expound on the issue over at my blog on BestOnlineHighSchools.com

I have a new article on free online high schools up over at the very large and very popular eLearners.com. Free Online High Schools: Finding and comparing online HS programs  is about the different types of free online high schools as well as how to avoid the fake ones.

I hope that you will take a look.