All New Level of Weird (A Destiel fanfic high school AU *kind of*)

Okay let me just say I'm kind of sick of the Punk!Cas and Jock!Dean high school au's. I'm not saying they're bad I'm just saying there are so many so this story will be different. It is a high school au but with a small twist.
~~~~~~~
Dean's mother was killed by the yellow eyed demon. We all know how that story starts. Dean's just starting his second year of high school.
~~~~~~~
Castiel is an angel. He was sent to earth to learn all about god's most precious creation. He is also starting the second year of high school.
~~~~~~
What happens when the hunter meets the angel and some drama starts up?