This girl at school, does she like me?

There is this girl at school who I know all her friends well but not her that well cos she is pretty shy. She always seem to glance at me when I walk past her in the corridor. She pays attention to me when I chill with my pals while she is nearby. She is always the first to hide a laff when I crack a joke in classes with her. Does she like me cos the only time we actually spoke was when she asked me for homework help last year...