Which is a better way to get this girl to notice me or talk to me, need girls opinion?

I'd whistle at her in the hallway when shes walking past. if she ends up being in front of you in the hallway, whistle at her, when she turns around to see if the whistle was for her and who it was from, whistle at her again, or wink to let her know it was you. at this point, she'll either slow down to let you catch up with her, then BLAM...theres your open chance to talk and build. if she doesnt slow down, it doesnt mean she doesnt like it, it just means she's already walking with a group of friends and blah blah blah....but trust me, she WILL think about that whistle when she sits down in her next cl or when she gets home from school ;) and if you dont know how to whistle then, that sucks lol