http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
School administrator's complete letter book
This is a valuable source book on school communication. It is a gold mine of tested, usable letters and others communiques, some of which can be used practically word-by-word from the book, while others can be adapted to your specific needs. It contains letters to be used and letters to be emulated.
compiled and edited by Gerald Tomlinson.