I kind of remember 8th grade US history.
My teacher was an elderly Black man, he had taught at the segregated school up on the hill before it was closed. Nice guy, truly awful teacher. The thing I remember most was that he was a huge Christopher Columbus fan. No, really. He talked about how he would shed a tear for Columbus, because he "didn't know he'd reached the new world". It was almost hero worship level, not just inaccurate, but we also got no coverage of Columbus's atrocities. We got nothing of Black history either, he'd not just lived through segregation, he'd taught through it, and we got nothing at all about it.
The old segregated school is still there today, it's a museum now. And I hope 8th grade history includes a walk up that hill to the museum, but I suspect it doesn't. It's got bronze statues of the first kids to walk down that hill to school, some of those kids were the parents of my friends.
We weren't taught that history. But at least we covered slavery being wrong. We're going backwards.
I don't play sportsball and I've only been in the Denver airport, but I've spent several days in Albuquerque, and I can honestly say I never even noticed. I actually just looked it up, and Albuquerque is higher than Denver - I didn't think it was.
But yeah, I didn't notice any difference, and where I live is maybe 800' above sea level.