When I was that age I knew who the candidates were and who my parents favored, but I don't recall having a real opinion one way or the other.

If we are to believe this child, all or most of her classmates (but only the girls) were so invested in the election that they were performatively grieving across her school for hours or days.

Assuming this is true, they are being aggressively politicized and brainwashed by their (assuredly female) parents. Kids need to just be kids and not worry about politics.