You have this girl in your class but you to affaid to ask her to go out with you what do you do?

not much you can do besides asking her out

talk to her for a while and get to know her and see how she feels about you

you can always write her a note and give it to her it would be a bit more comforitable for her to answer and not as embarrassing for you if she says no there are plenty of fish in the sea