I sometimes want to pull secret pranks on this girl at my school because I hate her
Why do you hate her?
I just want her to feel bad for once
You should not pull pranks on someone because you dislike them. There are better ways of dealing with negative emotions you have towards someone, like just ignoring them.
Nah, I'm going to prank her just because I can.
If you were friends that's one thing, but since you aren't, don't you think you are being really cruel to her? I think it's best to not even try to do this, because it is bullying. How about trying to befriend her instead, maybe your hatred is a misunderstanding?