Everyone these days wants that "gaming" computer that they can take to school. Trust me a dedicated gaming laptop is not that fun when you have to pull it out in class to actually use.
IMO your options are to get a gaming laptop that weights 7+ lbs (which will suck for carrying around at school and be loud)
or spend 2,000+ for one of the very few portable gaming rigs out there... New razer blade, MSI GS70, gigabyte p35k, Asus UX51VZ
or buy a desktop for gaming and a real ultra book for stuff at school
I understand this is a popular question, but keep in mind, I'm not a hardcore PC gamer so buying a seperate PC just for gaming doesn't make much sense for me. Anything good about the Lenovo y500 or y580? Both fairly cheap, lighter than the G55 yet maintain some really good things.