Here in the US, most middle and high schools have a school orchestra or symphonic band where students can learn basic music theory and how to play an instrument and read music. Then they usually put on like a spring/winter concert or something. Furthermore, most also have the opportunity to play in the school marching band in high school. The marching band marches and plays in local parades, plays during school sporting events, and usually performs a half-time show during the school American football games.
I know the marching band part might be less common, but I just didn't know if any of this was common in other countries.