So his family doesn't just show up occasionally, but we have an airhead dragon right there in class. That possibly changes dynamics.
I have another problem though: The headmaster was allowed to tell the royal families and the highest nobles about Iren's test - exactly the people whose children are gathered in this classroom.
With literally the fate of humanity at stake I'd imagine these children would have been thoroughly drilled to present their best side, yet that doesn't seem to be the case. It's not as if there wasn't enough time, as Iren was able to return home and study up on etiquette and history.
Maybe even though the kids are part of the royal families and highest nobles, they're not 'officially' royals and nobles in the grand scheme of things yet, and so warning their children about humanity's impending doom may be considered a 'leak' that the dragons will use as an excuse to wipe them out entirely. They don't want to take such a chance for a short path to the end of their lives.
Even if the dragons didn't specify it to that extent, there's no way any of them can
go over there to confirm it, not after someone from their kind tested the dragons' patience for the last time (which I will say,
very patient and tolerant of them to endure, almost godlike, but yeah, their fury and vengeance up to now is justified)
. None of them want to risk their hide to speak to the dragons under diplomacy (I don't think anybody knows how bad humans are more than those who stand at the top, i.e. the few 'sensible' elite
), so the best they can do is show by example that Iren is someone that
should not be angered under any means necessary and pray to God (the only entity that stands above dragons, I reckon) that their idiot children will follow their demonstration.
Ngl, I'll chuckle a little if the king of the country lowers his head before Iren in front of everyone, including his (probably idiot) son, the crown prince
, apologizing for his misdemeanor toward him.