School Dances have always sort of interested me as its interesting watching various shows such as Simpsons, The Owl House & many others and seeing a school dance, as they were never really a thing at all during my school days. There were only discos when I was a teenager.
I will say that my Primary School was a small one unlike majority of schools portrayed in media (a lot of rural schools in Ireland are small ones anyway), so a school dance would of been rather impossible. Although, I do wander if Elementary Schools in the US actually have school dances or if its just a thing in The Simpsons & other shows that have a dance in an Elementary School setting.
As for Secondary School, everyone would of rather have gone to a disco instead, so I don't think anyone was interested in having a dance in school. I do think that if we had planned a school dance at my Secondary School as there would of been a lot of room for one, we wouldn't of been able to.
I don't remember hearing of school dances happening around me either, but saying that, I probably wouldn't of been told about it, or if I was, I probably would of forgotten it shortly after due to lack of interest.