Dont fire them. Announce youve accepted their resignations and their unilateral cancellation of their prior contract.
The real problem with all these calls for firing or renegotiation calls is that everyone here doesnt seem to understand that those with the power to fire or renegotiate have no interest in doing so...they ALL agree wholeheartedly with the radical teachers...all the way up to the governor. In that very real sense the teachers unions make damned sure that they are negotiating with themselves, not with any counterpart that has a different agenda than their own. They do this by being the major money and work machine for the far left politicians in California, and nationally. And as only a smallIsh minority in California does not subscribe to their far left politics, there is no way to change that. Its an entirely rigged leftist system, and that appears to be the way California wants it.
Exactly.
The only thing to do, is to remove as much federal funding as possible, and allow them to collapse enough for the population to vote for a change in the government.
If it gets really bad, the Federal government can move in to restore order.
It is unlikely to get that bad.