school song; school anthem
Refers to the official song of a school (elementary through university). Sung at ceremonies and events.
We sang the school song at the entrance ceremony.
Any graduate knows this school anthem.
We sang the school song at the graduation ceremony.
This school song was composed by a famous composer.
校歌 (a school song) is pronounced identically to 効果 but has a completely unrelated meaning.
Compound of 校 (school) and 歌 (song). A straightforward modern coinage.