This doesn't provide the information we need. Did he design a 3d building and CALL it his school, or did he simply USE the layout of his school IN a 3-d game?
If he used the layout of his school, he didn't design it, he just copied it, and it's probably because it was easier than designing something.
If he had NAMED his location after his school, that might be a sign of something worse, or just a guy being funny. You have to be careful about being funny anymore, because with .0001% of our population being killed by complete nutcases, it's important that we take away the rights of millions of people to have fun, joke, and even be insensitive about people being killed.
Remember not too long ago when a whole spate of movies had plot lines involving either kids taking over a school or engaging in some manner of slapstick battle with armed gunmen in school settings.
Here’s the one that jumped to mind - soon to be censored due to “highly controversial subject matter”:
Plot summary for
Toy Soldiers (1991)
http://imdb.com/title/tt0103112/plotsummary
Billy Tepper is the leader of a group of rebellious guys at The Regis School. He has already been expelled from three prominent private schools. His best friend, Joey Trotta, is the son of the Head of the New York Mafia; Billy, all their friends and many other kids at the school have equally influential and prominent, if more law-abiding, parents. When Luis Cali’s father is put in jail, he heads for the Regis school to put theson of the judge in charge of the case under hostage, only to find he has been removed. However, once he realises who the parents of the rest are, he decides the entire student body of the Regis school would be an even better bargaining chip.