At the time a teaching position was a super sweet patronage position that a politician awarded his friends.
If you take a look at the South and their regressive remake of education, especially North Carolina, you'll find that old system returning.
but the reasons that necessitated tenure are long gone, and all teachers are protected under the standard laws for hiring and firing, which cover us all.
...which are being eroded away by organizations like ALEC. Thankfully there are sensible states like Ohio that figured out how to get rid of these kind of groups.
They also have a strong union that will ensure protections.
I assume you're not a resident of any state in the South, inter-mountain West as well as not being a resident of Wisconsin, Michigan, Indiana, or Pennsylvania.
So there's no need for special laws that give teachers more advantages than everybody else at the expense of their students.
There's no need to abandon tenure when you can establish the very "van der Snoot" academy that you always wanted.