We allowed it in designated areas outside the classroom between classes…

My school even had a gazebo on the school yard so smokers didn't have to stand in the rain. They literally spent money to accommodate smokers.

Of course by the time I was there smoking on school grounds was prohibited, so smokers had to go just beyond the gate. Which students were not allowed to, but few teachers were willing to enforce that

In the 1970s some "Vocational" High Schools allowed it (if the students were past the legal age).

We allowed teachers to smoke in the classroom, so in some sense..

Teacher gets the lion’s share of the nicotine, kids get all of the rest, essentially.

Raw deal.

In the classroom not, but during my youth in Germany, the smokers had their own smoker's corner with an ashtray until smoking age was raised from 16 to 18 and the smokers had to go out of the schoolyard (i.e. they had to walk 5 meters more, lol).

In the class room? No. But students could smoke during breaks at the schoolyard.

Funny that we as a society were winning for a while until somebody invented vapes.