Every time I go to the bathroom with my friend creepy stuff happens like stall doors opening and closing by themselves right in front of our eyes and the sinks turn on by themselves is my school bathroom haunted?

Sounds normal. Faucets can turn on from water pressure changing in the pipes. Some that use a threaded valve can also unscrew (turn on) by itself. Ventalation can caus doors to open and close etc. I don't think you have anything to worry about except your aim ;)

Most school bathrooms are haunted, the souls of all the students tourtued in school live there.

It also makes this moaning sound that a human or animal can't make explain that

That can come from doors or ventalation. Why don't you record the sounds and check it out after your out of the environment.