When I was in 9th grade, I was still in jr. high (in Wichita the grouping was 7th-9th), and I was a girl's gym leader. I, in no way, wanted this job, but the p.e. teachers made me do it. We were supposed to help out in gym class, and also to "monitor" the showers. (I don't think they still make jr. high kids shower after p.e, which is good, because that borders on torture.)
One of the "perks" of being a gym leader was that we got to wear white camp shirts and bloomers instead of pea green camp shirts and bloomers. Really.
One of the other "perks" was that we were given whistles. Until today, I have carried my whistle on my keychain, and perhaps I have used it a handful of times in the past (aaahhhmmm) years. Today, the whistle totally fell into two pieces, and that is the end of that.