Why does Madoka need to go to High school? Wasn't she just an omnipotent being?

She can't really explain that to her parents and expect them to go, "oh, okay then". Besides, she probably likes school.

School would come easy anyway, being all knowing and all.

angrybull said:
Why does Madoka need to go to High school? Wasn't she just an omnipotent being?

Madoka isn't omni potent, although your point still stands, she certainly possesses more knowledge and experiance than anyone on the planet.