As a music teacher, one of your biggest challenges is obtaining parent/community support for your program. Concerts are the perfect place to showcase your students' hard work.
Unfortunately, it can be challenging to convince parents that their students should participate. A permission slip is one way to secure commitment.
This document provides an outline/ideas for formatting and creating your permission slips to ensure student involvement in your public performance.
Personally, I have used this permission slip format for elementary general music concerts.