Back in the bad old days of the Cold War, a lot of successful espionage projects run by the Soviets hinged on a certain type of snobbery.
You can see it most clearly when reading about the Cambridge Five, a spy ring consisting of several British high-bred good-old-boys. Recruited while attending a snooty college, they betrayed their country with elan and enthusiasm. The reason why they managed to get access to sensitive material was because they came from good families, and could use the connections formed during their school days to get jobs in government. Jobs that dealt with intelligence and secret information.
They had sources of sensitive info other than the documents they read while at the office. Other people in the spy game would let their guard down during casual conversation, and let slip some secrets. After all, this was their buddy from their university days! If you can’t trust someone who wears the same school tie, then the world makes no sense at all!