I like a girl in my class and I'm a little shy to ask her out and I see in all my classes but I think shee might like someone else

Well you shouldn't ask her out straight away, you should get to know her first and vice versa, introduce yourself to her, sit with her at lunch or something. I know what it's like to be shy ut if you really want this, you'll do it, because you can

Start talking to her and just become a friend to start with. Have to get over being shy