The last I heard Arizona was still part of the United States. If you try really hard you might be able to figure out the appropriate language is English!
If the teachers don't want to speak English they should seek employment in Mexico.
19 separate cultures in Arizona ---people who couldn't communicate with one another nor identify with one another. The Indian nationS were easy to conquer because they were so fragmented. We shouldn't make the same mistake. One people from many.
Which native American language would you like them to speak?
The laws governing Arizona and the rest of the United States are written in English. English is our language. If you wish for all our new immigrants to languish in a permanent linguistic, second-class citizen status, then tolerate our polyglot stupidity.
I see you have a command of semantics but not of the issue. The language that is to be spoken in school - during class, recess, in the halls, bell to bell - is English. The proposition that came into law seems pretty clear on the matter. And if not to some, the principal, the person that runs the school, has made it clear for them: Speak English.
That's not too hard to sort out is it?