Sounds like a combination of significant changes in student policies and enforcement over the last 40-50 years (accelerating in the last 20-25?) combined with very bureaucracy- and process-heavy set of enforcement mechanisms.
Editorializing a bit, this may reflect general social changes in the US - schools are seen as being "in loco parentis" though many of the students are legally adults, and parenting in the US has changed in the last 40 years from "go play at the park with your friends, but be back by sunset" to helicopter parenting and the very thought of unsupervised children at a park being something deserving of reports to Child Protective Services.
So, now the school is helicopter-"in loco parentis"ing, and covering its butt with paper to shield it from the actual helicopter parents.
Editorializing a bit, this may reflect general social changes in the US - schools are seen as being "in loco parentis" though many of the students are legally adults, and parenting in the US has changed in the last 40 years from "go play at the park with your friends, but be back by sunset" to helicopter parenting and the very thought of unsupervised children at a park being something deserving of reports to Child Protective Services.
So, now the school is helicopter-"in loco parentis"ing, and covering its butt with paper to shield it from the actual helicopter parents.