For the past 2 weeks I've been wanting to approach this cute girl in my class. Fact is she is always with her friends and I've never done pick up so I knew it would be a bad idea.

So today I finally approached not only her but also 3 others girls. Needless to say I got rejected, which sucks considering I have to be in class with them. When I approached, I tryed to be funny and said, "Hey I'm ..., do you know bejamin franklin? He once said "Lifes a ***** and then you die", "So why shouldn't I approach these cute girls". One even asked me if that was a pick up line. I made some small talk and even tried to be somewhat humurous but they didn't respond. They weren't being receptive and seemed to be offset from me. I asked them why one said it was strange I was introducing myself after two weeks of driving school and not on the first day, and another said that she wasn't expecting this. So i just excused myself and went back to my friends.

It sucks because the next 2 days I have to be in driving school with a bunch of girls who think I'm a weird creep. What could I do or have done differently, to maybe elicit some attraction/rapport from these girls?

For one, I'd say listen to what they said. Next time you're in a simular situation, try to introduce yourself on the first/second day without showing too much interest. And flirt a little in the next classes. But if you're gonna still want something with these girls I'd do something like telling one of them or the whole group how silly of an introduction it was an that they were right, you should have introduced yourself on the first day. If you admit that and still seem rather confident and not caring about that awkward moment then it won't matter. As long as you care about it, it will matter.

Nice one! I gaurantee that most people on this forum wouldn't have had the balls to approach them. Congratulate yourself. You're one step further than 99 per cent of wannabe PUA's.
You have to be willing to be rejected if you want any success at all. I've taken that to the limit lately. If I'm almost sure I can't take an interaction further I'll just escalate really fast. How I see it, if you're not getting anything anyway, you might as well be sure.

Many examples of being unsuccessful, but it payed off one time.
This Norwegian cutey was not have any of it when I tried to kiss her so I just started saying "Wouldn't it be so awesome if we were to just kiss right now?". She kept saying "no" so I just kept saying "it would, it'd be so cool. Coolest thing ever". After going back and forth for a bit we finally had a small kiss and then she kept pulling away. Kept pushing though and ended up having an amazing night.