With focus on mp maps you are limiting yourself to a very small niche. Most level design jobs nowadays are about grey boxing and scripting single player levels. Not sure going to school for this has much benefits as you get all the experience for that by doing it and ther's great ressources available to learn it the autodidactic way from making hl2 maps to mods for skyrim etc. At least not worth to get 40k in debts over it imo.
Be aware that the creative aspect of it is very limited nowadays aswell since most studios will use environment and lighting artists to make the maps beautiful.
So i think to study would make more sense if you aim to work on the art/design side of things. And in that case i would go as far to say that a conventional art/design education would be more benefitial then one specificaly aimed at games. I notice this time and time again that what's holding me back is a lack of art fundamentals not the use of specific software and tools.
So looking back i could bite myself in the ass that i didn't get a proper art education. I don't think "oh damn i wish i gone to a game school when i was younger". Someone made an interesting point about that on polycount recently when he complianed that his fellow character artist at the studio where he works don't know the basics of human anatomy.