Controversial opinion here (maybe?) but I think the purge of men from education has had a real impact on child behavior and learning.

https://www.theatlantic.com/education/archive/2019/02/the-ex...

"...men continued to make up most of the high-school teaching force until the late 1970s"

Humans are still largely primal and male presence tends to instill respect and behavior changes in younger people; I suspect the absence of it has not helped the current situation in many schools.