Does this teacher sound old-fashioned and naive?

I had a teacher who was surprised that my dad gets along with my grandfather because she said that a girl's dad usually hates her boyfriend. She made my grandpa sound like he's crazy! This teacher also thinks that 12 year olds wouldn't even know how to get on social media. She was surprised when a group of pre-teens were suspended from school for stalking and harassing online because kids are just "so innocent". I know for a fact that kids at that age can be horribly mean to each other, and they are not shielded from the media. By being in denial about it, an adult can fail to protect a child. Pretending it doesn't exist won't help but make the matter worse because no one is stopping it. A group of 11-12 year olds with iPhones could be sending explicit photos to grown up strangers in the exact same classroom as her, and she won't even realize it! When I was in her class back then, she'd be surprised that I don't appear to be bossy or over-competitive because I'm the oldest in my family. There's been a few recent studies that there's barely any drastic long-lasting effects on your birth position either. People don't tend to be as "bossy" when they get older and have more social skills anyways.

Right, more about your teacher and her opinions of your family.

I'm not aware that adults refer to themselves and each other as "grown ups."

I'm even more surprised that a teacher had any interest in your Dad's relationship with your Grandfather, either paternal or fraternal.

I have no idea where this took place or when, but it is/was/might have been inappropriate, depending on the circumstances.

I'd suggest that you move on. I would like to read the studies about the oldest child being bossy or over-competitive. My college courses in Psych led me to believe that older children are very responsible. We must have taken different courses. Now that I think of it, none of my college professors cared much about my Dad's relationship with either of my Grandfathers. Unlike you, I had two.

Also would like info on the study that proves that a girl's Dad "usually" hates the girl's boyfriend. That is also a new one for me.