I was the director of the Early Bird Jazz Band program at Linus Pauling Middle School for 14 years! During that time I wrote a number of charts for the ensemble, which was often a mix of standard and non-standard instrumentation. Many of the charts I wrote for the group are available for purchase on Sheet Music Plus!
Here's a listing of some of the charts I have for High School and Middle School Jazz Band which also includes links to various combo and mixed ensemble works.
The following are a couple audio examples - enjoy!