I have to say this was one of the best X-Men comics I've read in years, and one of the few that actually felt like the classic X-Men stories that initially drew me into the franchise.
There's just the right mix of action, drama, and light-hearted humor, compared to the constant angsting that clung to almost each and every X-Men book during the last few year.
Even though the book carries the name "Wolverine" in its title, he never over-shadowed any of the extensive cast, and Aaron managed to juggle a lot of characters in a single issue and give each one a distinctive voice.
The pacing was superb, with no panel space wasted - it's amazing how much story and character develppment you can squeeze into a single issue if you really try.
While I found the Hellfire brats incredibly annoying in Schism, they work well here. The Schism event was about a serious philosophical rift among the X-Men, which is why over-the-top kid villains using alien brain slugs just felt misplaced. They fit the lighter tone of WatXM much better, however, and actually pose a fun dilemma for Logan, whose firm "keep the kids safe" stance is effectively challenged by a bunch of kids he now can't properly fight.
The school roster and class list in the back of the issue were just pure win, too.