Figured since those fancy college coaches had one, we should too!! If you look on your state coaching association or athletics administration sites, you should be able to find these. How nice if they were all in the same place! Here's what I could find so far.
Alabama: Murphy High School (Mobile)
Arkansas: Umpire SD
Arizona: Copper Canyon, Catalina Foothills, Estrella Foothills, Fountain Hills, Deer Valley
California: Too many to list. See
http://www.cifstate.org/about/jobs
Colorado: Out of date, postings here:
https://www2.chsaa.org/coaches/coaching.asp
Connecticut: Tolland Public Schools, Trumbull HS, Southington HS, Shepaug Valley, Lyman Memorial
Delaware: ??
OK, I'm tired of looking now. If anyone wants to post for their state. that would be awesome. If folks interact with this post, I will finish it, if not, I'l stop there!!