> Japan has students come in on alternate days, so that the school can operate at 50% capacity. Mask mandates, social distancing and temperature checks are enforced strictly.
Citation? I am familiar with Japan's national Covid policies, and I have heard nothing of this. In general, Japan allows the prefectures to make their own decisions, and for issues like this, prefectures issue requests, not mandates. This paper suggests that even at the outset of the pandemic, the range of NPIs imposed by Japanese schools was quite variable:
https://www.nature.com/articles/s41591-021-01571-8
This news story from September 2020 explicitly says the exact opposite of what you're implying -- school districts operating at maximum capacity, and interventions varying based on what (for example) the PTA decided to pay for:
https://www.cbsnews.com/news/japan-schools-back-in-session-c...
"Typical classrooms in Japan would seem to flunk the 3C test, however. In Ms. Katayama's classroom, desks were spaced just enough to walk between. Regulations allow up to 40 children per classroom."
"Last month, a panel of scholars and education researchers in Tokyo launched a petition to urge rapid adoption of smaller classes. Class size "should be reduced to 30 right now, and quickly, to 20," the panel said."
"Japan's Riken research institute, working with Kobe University, argues that even large classes can be held safely — provided ventilation is sufficient."
Japan is a big country, and -- just as with masks -- there's a fair amount of "orientalism" going on in the west, in terms of overgeneralization and stereotyping of their response to the virus. My only overarching observation is that they've been much more relaxed than we are in the US.