I agree to everything Thucy just said, but since I got out of highschool just one year ago, I want to add my own advice.
So I had a similar blunder with a girl around freshman year. Less on the angry side and more on the creepy side, but best thing is to just write it off. You'll never have a chance with her again. As to her friends, I can't say. I honestly never became great friends with this girl's friends, but that was by chance, not by choice.
Now I was horrible - still am - at picking up signs that a girl liked me. So, more often than not, the girl came to me lol. The trick is to not go after the ultra-attractive girls at first. Go for their less-attractive-but-still-good-looking friends. That was how I got my first girlfriend. We then broke up, and she hooked me up with her ultra-attractive friend (which sadly didn't last long....they tend to go with the ultra-douchebag guys). My advice to you after that is don't be afraid to date a grade below you. Two is pushing it for high school imo. My ex-gf of 2 years was a grade below me. But when you go a grade below, make sure you trade up in looks lol (anticipating comments on how shallow this all is).
But most of all, there are two things I want to tell you. Find girls who you have stuff in common. Every one of my girlfriends was in band with me, most I had at least one class with, some were on my bus, etc. The more you have in common, the easier it is to converse. Second thing, increase the amount of girls who you are friends with. If they are your friends as well as friends of this girl you're after, they will act all giddy like hs girls and try to hook you up. Literally happened with all 4 of my hs relationships. Just beware of the "friend zone" with girls you may want to date. The "friend zone" is a horrible, horrible thing that I am trapped in too many times, and there is no means of escape that I no of :(
Other than that, happy hunting and don't get too bummed if girls ignore you. It happens, so just brush it off.