Perhaps I'll propose an alternative. I don't think the objection that he has to transgender recognition should be suppressed despite my support for the employer requiring him to use the preferred pronouns. In fact, doing so is a matter of respect for his humanity. But that would mean there is also a need to respect the teacher's difference. So I would suggest as an alternative, he should address the school in whatever appropriate platform to have his difference heard and considered. And I would support him being part of some forum for students to respectfully discuss their differences. Clearly there are students who possess the same tension as the teacher. It would be powerful to show them how to express these differences productively instead of engaging in an authority-subordination dynamic. If the school denied him the opportunity to take such actions, I wouldn't support them, although I also don't think it would be illegal.