More and more we are called to educate our students as humans as well as musicians. Choir seems to be the one place in their schedule where our students can relax, be human, and release their anxiety about college/standardized tests/just being a teenager in 2015.
My wife has created a fabulous website for teachers to find videos, books, and other resources that have proved useful to her in her choir classroom. You can check the website here or follow her on Facebook or Twitter for new posts.