Around the same time as your "false but accurate" rules for teachers, the Ford Motor Company had a "Social Department", which employed investigators to determine whether employees engaged in heavy drinking or gambling.
As I pointed out, the rules concerning interracial dating applied until 1967 in Virginia to people of every profession. The rules concerning men wearing garters at IBM applied in the 60's. And according to my late grandmother, you could be fired from a job on the police force for marrying a Jew (I'm not sure of the exact date, but it was definitely post 1915).
So no, the rules didn't stop applying to other professions 200 years earlier than to teaching. Things were just really different in 1915 and even 1970 than today.
http://www.autotropolis.com/wiki/index.php?title=Ford
As I pointed out, the rules concerning interracial dating applied until 1967 in Virginia to people of every profession. The rules concerning men wearing garters at IBM applied in the 60's. And according to my late grandmother, you could be fired from a job on the police force for marrying a Jew (I'm not sure of the exact date, but it was definitely post 1915).
So no, the rules didn't stop applying to other professions 200 years earlier than to teaching. Things were just really different in 1915 and even 1970 than today.