To what you bring up in points 2 and 3, I would say the only time it would *maybe* be appropriate is if he were teaching a health and sexuality class - or possibly a history class, but it would have to be a very specific type of curriculum. As an educator, his own personal sexuality and relationships shouldn't matter unless he had a relevant issue to teach (such as being an activist, or learning acceptable intimate boundaries), but even that's a stretch. Work life and personal life need to be separate, or it risks becoming a legal nightmare.

Article: https://archive.ph/mU7vt

He's a DRAMA teacher. He's completely out of bounds here.

I do sorta feel for him though, I don't get the impression he meant anything bad by displaying the flag, I think he probably had good intentions on the surface. But he's young and indoctrinated, and doesn't know how to be a professional. As evidenced by:

"It appears that there is a different set of rules if you are an LGBTQ+ educator," Wallis wrote on Twitter. "Neosho has no mention of gender identity or sexual orientation in their non-discrimination policy, and that is disconcerting enough. Couple that with a policy banning anything that expresses part of me in the classroom, and it makes for a hostile work environment."

He's grasping at concepts he doesn't even understand yet, and is digging himself into a negative employment hole he may not ever be able to climb out of.