Flirting in school and stuff?

So I’m really just looking for help from guys to flirt. I’m still in school so I would like these to be more appropriate, also I’m not much of a rule breaker and even flirting is a big step. I tried physical contact by making our elbows touch while sitting next to him and he didn’t move over so I think that’s good. I really just need some tips.
Flirting in school and stuff?
Post Opinion