Schools are funded by the national government in Japan. These families are not a net-loss on the community, as the parents pay taxes and children are a driver of economic activity.
Isn't that all covered by the national government and parent?
Contary to the name, Japan National Health Insurance is managed at municipal level.
TIL. Seems like it's a mix between national and municipal funding, but that doesn't really change the overall calculation, as the parents will have most likely paid it back through their own municipal taxes.