Maybe, but a some of that has to do with personal contact. If you're around Harvard people all the time, you conform to their beliefs and behaviors. If you're not, maybe your real world surroundings have more of an influence. To be sure, though, public schools have gone pretty far with indoctrination already.
If it really was as effective as many purport... then there would still be a soviet union and people wouldn't be risking their lives trying to escape North Korea and Cuba.