I heard someone mention this site saying that if some online schooling services caught you using it, you could get expelled. Is this true?
2 answers
If they know about jiskha, Probably
as long as you only use it to get some help, I see no reason to disallow it. That's no different from studying a book or video. The goal is, I hope, to learn to solve problems or answer questions.
If you use it to cheat, though, that's another matter.
If you use it to cheat, though, that's another matter.