I think that this is a great question. This doesn't apply to me, both of my parents are educated.
However, a friend of mine, has worked hard, done well, but comes from a tough past. She is the first in her family to even graduate high school. Her mom and dad are high school drop outs, 3 brothers are too. Her past was damn tough. I'm hoping that adcoms will consider her level of achievement against the hardships she has endured. I mean, I went to private schools all of my life. I was blessed and groomed, so to speak, for this life. She was not. It's been a struggle and I hope that consider that. This is hard for me to admit, but her achievements are superior to mine because of where she came from. We have similiar stats, but her's were earned in spite of her past, mine were partly earned because of my past.