I have read so many good responses but wanted to add that I have worked elementary, middle school and high school. I saw the most in elementary and that's when I decided to go back to high school. In high school, it takes more time with practically adult size kids, but I see 15-25 daily. In middle school, I would see about 30-40. But,...wait for it, the elementary teachers and the kids drove it up to 60 a day! Yikes. They were cute, but many...whew. Throwing up, bumping heads while in line, accidents on themselves, #1 and #2, lol. I left after 13 months when I spotted a high school opening. I ran, not walked, lol.