There's been tons of hype surrounding Season 3’s graduating seniors of McKinley High. Will the departing high school students get their own spin-off? Will they just be peripheral guest stars on Glee? Well, admittedly, Ryan Murphy hasn't quite figured it out yet. But just to clarify who's in danger of being ousted, we've taken the liberty of rounding up who we know, for sure, will be donning those hideous cap and gowns at the end of the school year.