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Beginning in elementary school, kids come to understand that what you put into your body matters a great deal in how you think and feel throughout the day - and how you go about your life.
As a country, Japan prioritizes school lunch. If parents can't front the $2.50 cost of a meal, free and reduced lunch programs help kids stay full.
"Japan's standpoint is that school lunches are a part of education," Masahiro Oji, a government director of school health education, told the Washington Post in 2013, "not a break from it."
Here's what it looks like to be one of the global leaders in lunchtime.