When girls get their periods no matter the age, cross culturally they are viewed as having grown up. This is not the case when boys have their first ejaculate or whatever. Boys continue to be boys, and even men continue to be boys. You have to wonder why this is the case, why the female body is treated so differently.
Nobody knows how the fae found out about April Fools Day, but now it's a thing and it is TERRIFYING. Not because the fae will prank students, but because this is the one day the fae will permit students to prank them. Worse, they expect it. They are delighted to be singled out for a particularly clever and amusing joke - as long as the joke is worthy of their dignity. It's a knife edge: don't be dull, don't go too far, but - above all else - don't be TOO clever.