Seems like an overstatement to say “an entire cemetery”. Per the Wikipedia page, the cemetery is 120 acres with 200,000 grave sites, but only 78 of the graves are RAF students (which still is a terrible amount of people to lose in training, of all things).
I think it's fair enough if it was enough they thought to make that a specific section. You probably wouldn't be commenting about it if it so happened that the entire site was .1 acre and only the student pilots.
