I don't believe the teachers association is funded by the state, but by private money from the teachers. If that is the case, then they can do whatever they want.
Did you hear that Apple and Google are also giving large donations to defeating the measure?
I think you guys should boycott and not use google's website or buy apple products ever again.
As Apple said in its statement about their donation, this is not a liberal or conservative issue. It's a civil rights issue.