I suspect he's commenting on the level of improvement. My first thought was, somehow overnight, you'd taken a massive ten year step backward. Eek! Then I read the post and learned the work was ten years old. Aha!
Besides drawing your fingers to the bone for ten years, is there anything else behind the maturation of your work?
Ooooh! Okay now I get it. I thought he was referring to the school this page takes place in, and couldn't decipher what he was asking.
Yeah, I went to the Kubert School in '03-'06. That and trying to draw at least an hour every day has helped me improve.