We were not/are not wealthy, but I don’t remember any calculators in my classes in high school. Graduated in 1966.
I remember using the Wang programmable calculators in college, graduated in 1970. They were pretty nice for statistics.
Nothing matches the drama of bashing numbers into those old calculators, except of course the older ones with the “chaaching” handles.
I still have my old clock radio with those flip-over numbers (clock part doesn’t flip, but the radio part does).
When we moved into our house a few years back, the previous owners left behind an old microwave (with the dial). We kept using it until, while watching GSN we saw it being offered as a grand prize on Match Game ‘77. My wife put her foot down at that point.
In 1975 I took a graduate course in statistics and in the middle of the mid-term my calculator ran out of power and I had to complete the t-square and sum of the square calculations by hand. Got a B+. Today a calculator malfunction would qualify for a redo.