Hyrule Military School is the school where Link and other people get/got trained to be (a) warrior(s). It was founded in 1926 in North Equada City, Hyrule Province, Gomalan, Hyrule. It is a stereotypical military school, only medieval.
It was founded in 1926 as a Mah Boi Scouts camp, and then it became a military school. Its routine included push-ups, archery, and swordsmanship. Many people didn't come out alive, so it was a surprise when Link managed to graduate.
Most people six to eighteen can enter.