Origin

This character combines wood (木) on the left as a classifier indicating it relates to something made of wood, with a sound hint (交) on the right that suggests how the character should be pronounced. Historically, the character likely originally referred to a wooden frame or stand used to hang things for inspection or comparison. From this concrete sense of examining or checking against a standard, the meanings expanded to include proofreading and correction, and eventually the modern sense of a school — a place where knowledge is examined and checked. The wooden-frame origin connects to printing and proofreading through the practice of comparing printed sheets against originals by hanging them side by side.

AI-generated (claude-haiku-4-5), not yet reviewed. Formation type (automated guess): Phono-semantic (meaning + sound hint).