scream 2?

[Forito Baroulko]

I was watching Scream 2 and i had a few questions about their Greek system set up in the movie. They have sororities that arent on the NPC list so r they a local organization. And Derek gave Sydney his greek letters necklace- is that really sumthing that isnt aloud? and the two girls who belonged to the house were saying that they had theyre on on sydney like they wanted her to join the sorority- is that how it really works? lil sister