Attended one several years ago. Private school - I went to private schools (though never graduated). One person (who I actually quite looked up to as an intellect when we were in school) told me I should get a makeover. Otherwise everyone was about as they were in the mid 70s but older.
Went to the ten-year reunion. Disaster. Most drank far too much and behaved abominably - said vile things to each other - trashed the place. Felt so ashamed of them - ashamed to be associated with them even by an accident of past history. Since then, have avoided the other reunions.
Nope. To my knowledge they only had a 10 year reunion. There was poor planning and official invitations weren’t sent. I didnt go and I won’t go to any in the future. I’m friends with the people from high school I liked. I didn’t like most of them back then. They were superficial, preppy, snobby, and rude. They cared about how well you dressed, how expensive your clothing was, etc. I had nothing in common with them.