I understand why anime takes place in high school a lot, because its intended audience is high schoolers.
What is it with maids? And specifically the “French maid” type? Here in the US, maids are not like that at all. It’s usually a Mexican lady in a minivan who comes by once a month or something. Additionally, they’re not super common.
In anime, they usually seem to be a cross between live in maid and nanny. That wouldn’t be too weird if it weren’t so popular a trope. Is that common in Japan? I’m not the biggest consumer of Japanese media, but I can’t recall IRL maids besides the maid cafes.
That doesn’t match my understanding of why so much anime is depicted in high school. While, yes there is a lot of anime targeted at high schoolers, as it was explained to me is that high school is the last time in Japanese culture where your future is undefined on a path. As soon as you leave high school you’re into one specific education, vocation, or career path where deviation after choosing your path is rare or not social acceptable. High school period is the last place in Japanese culture where everyone is mostly equal and unbound by expections. Many of the stories follow the nature of change or growth. So this requires the point in character’s lives where you can tell it.
Other story tropes used to transport older characters back to this time include:
Some of the above is just my speculation. Other portions is what I’ve learned from others. If this is wrong and other people here know definitively, please correct me. I don’t want to be spreading wrong information.