NAMM and the National Association for Music Education (MENC) - Public Service of the Music Education Coalition to keep music in schools.

American Music Conference (AMC) --  Promoting the benefits of music, music making and music education.  http://www.amc-music.com

American String Teachers Association (ASTA) with National School Orchestra Association -- Promoting excellence in String and Orchestra Teaching and Playing  www.astaweb.com

National Association for Music Education (MENC) --  To advance music education by encouraging the study and making of music by all.  www.menc.org 

School Band & Orchestra Magazine  --  Great resource for students and teachers on what's new in the world of school music. www.sbomagazine.com