The Professor will help you:
You are 14 and because of this, you cannot experience love. You also cannot experience lust because I'm assuming your testicles have yet to drop. Don't worry, I'm here to give you advice in spite of this.
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You need to ask her out. The movies are a safe bet because then you won't screw anything up by saying something stupid. If she agrees, you are in. If she doesn't, you're an idiot for failing to nab a girl.
Since you are 14, you cannot drive. So how can you take her to the movies? It's simple - get your mother to drive you two.
Most importantly though, make sure you finish your homework before doing this.