[Blacksmith]

There are no lower standards for a teacher. My wife’s a teacher. The standards are set by the state and all districts abide by them. Education requirements are the same..
I retired from law enforcement and the sad truth is that regardless of education level or the depth of background check, bad apples get through. I worked for the us dept of justice, we were each assigned a background investigator that literally talked to our neighbors. We had our credit checked and people that even owed back hospital bills failed..
Even after all this we had the occasional bad apple.
You can’t always blame organizations or requirements or whatever..
Sometimes people are just bad and we don’t know it until we see it