Most of the time, no one knows. But if you're from a nice part of LA or SD but you went to a HS in a bad part of town, people might wonder why you went there, or figure it out for themselves.
I think in most cases fellow undergrads would see it as just playing the game, but some might see it as "cheating" or like you didn't earn your spot as much as they did (if they were from a HS that was from a good part of town).
Most of the time, no one knows. But if you're from a nice part of LA or SD but you went to a HS in a bad part of town, people might wonder why you went there, or figure it out for themselves.
I think in most cases fellow undergrads would see it as just playing the game, but some might see it as "cheating" or like you didn't earn your spot as much as they did (if they were from a HS that was from a good part of town).