I can’t recall ever having birthday celebrations with shared treats in class when I was in public school, and I can’t see the need for it, either. If I wanted to share treats with my classmates and/or friends, my parents threw a birthday party, on our own time. Treats in school were limited to planned parties at school, usually around some holiday, like Christmas, Easter, maybe Valentine’s day - that sort of thing.
For me, in fact, it was a big kick to have $.10 to take to school when I was in the lower grades so that I could get a carton of “Beep!” orange drink from the milkman to have at recess. No, we weren’t poor, nor was this a thousand years ago (about 30, in fact) - parents just didn’t generally feed kids near the amound of junk that they do today.
Never saw a bake sale either eh?
Where did you go to school...a madrassa?