My friend Steve is one of the best handsellers I know and particularly great with written descriptions of books. (I could probably be coerced into reading the dictionary if he gave it a good review.) That being said, I'm stealing this pitch for The Magicians because it's brilliant and accurate (also, not as obscure as some of his other references).
Ender's Battle School has relocated to Hogwarts and a Narnia-obsessed Holden Caulfield is one of the new star pupils.
Quentin Coldwater is unquestionably brilliant but has always felt out of place, taking refuge in a series of children's books about the magical land of Fillory, he has always played sidekick to the cohorts of his elite private education who he perceives as being better than him. When a critical college interview goes awry, he suddenly finds himself testing into Brakebills, a prestigious school dedicated to the arduous training of magicians. Although he's suddenly become a part of everything he was looking for, Quentin's naturally negative disposition hasn't shifted, and he is left trying to figure out what to do with the real world and struggle towards happiness.
This is Harry Potter all grown up and unapologetically dark. It looks at what happens when the separation of a Muggle and Magical world doesn't really exist, so years of training and memorization send you out into society with the equivalent of a philosophy degree (useful if you can explain to someone what exactly it is). With no ultimate evil afoot, what do the exceptional, brilliant, and talented people do when they're faced with the bitter realities of idle hands. There is drug use, drinking, sex and depression on the search to figure out where to go with their lives, which, in several cases devolve into insanity.
Though some of the ideas are derivative of fantasy classics, rather than shying away from this fact, Grossman embraces it and hearkens back to them with with jokes about passwords of "friend" in Elvish, and sending messages by owl. This is a new take on a much loved concept that explores a totally different society of magic and the realities that life will ultimately be what you make it.