The Guitar Center Music Foundation's mission is to aid nonprofit music programs across America that offer music instruction so that more people can experience the joys of making music.
Maximum Award: $5000.
Eligibility: 501(c)(3) organizations. Qualifying applicants are established, ongoing and sustainable music programs across the United States that provide music instruction for people of any age who would not otherwise have the opportunity to make music.
Deadline: N/A.
http://www.guitarcentermusicfoundation.org/grants/index.cfm?sec=info

The American Councils for International Education Teachers of Critical Languages Program brings qualified EFL teachers with at least five years experience from China and Jordan to America where they teach Chinese and Arabic for an academic year in schools that offer the languages as a course of study. They are currently looking for schools to host them.
Deadline: TBA
http://www.americancouncils.org/programs.php?program_id=MTA2

Barnes & Noble K-12 Grants
Through its stores, Barnes & Noble provides funding to local and regional efforts to promote literacy and the arts in K-12 education. Proposals should include a literacy or arts component that fosters both student achievement and community growth. Grant recipients must plan to promote the program with Barnes & Noble and be willing to work with the local store(s) on in-store programming. Potential applicants should visit a store in their area to receive more information. All nonprofits supporting the arts, literacy, or K-12 education are eligible to apply.
Application Deadline: Applications are reviewed on a continuing basis. http://www.barnesandnobleinc.com/company/codonation/co_donation.html

The Mockingbird Foundation (MFI) offers competitive grants to schools and nonprofit organizations in the area of music education for children. The Foundation is particularly interested in projects that encourage and foster creative expression in any musical form (including composition, instrumentation, vocalization, or improvisation), but also recognizes broader and more basic needs within conventional instruction.  
Application deadline: ongoing.
http://www.mockingbirdfoundation.org/funding/guidelines.html