I really don't see a problem with this. Learning through games (and activities in general; the average human is a kinaesthetic learner and so theory classes are absolute bullstuff) is the way we need to be going, and these kids will be able to get a much better quality education because of it.
You can mock it all you want because "lol minecraft is fer autismos lel", but I really hope that more educational facilities start to incorporate game tech into their teaching tools and really help the students get involved, motivated and learning.