A musical ensemble associated with a school, not necessarily a musical school; e.g. marching band.
School-band Sentence Examples
I marched in the School Band playing the cymbals, aspiring to succeed Mercer who played the big drum beside me.
'Geek' Music: Are you a member of your high school band?
Geek music involves whatever music you're playing in your high school band.
Since there is such a short time between spring break and summer break, going to a spring camp can help you free up time in the summer if you have to attend a sports camp or music camp to stay on your team or in the school band.