New York Public Library:
www.nypl.org
Brooklyn Public Library:
www.brooklynpubliclibrary.org
Queens Public Library:
www.queenslibrary.org

English

America Reads: Reading list from the US Department of Education
www.ed.gov/americareads

Best Books: Reading list and book awards explained
www.schoolratings.com/bestbooks.htm

Find a library near you:
Manhattan    (212) 621-0626
Bronx           (718) 579-4200
Brooklyn       (718) 230-2100
Queens         (718) 990-0700
Staten I.       (718) 442-8562

Social Studies

Asia Society:
http://www.asiasociety.org
Ellis Island National Monument:
http://www.nps.gov/elis
Library of Congress:
http://www.loc.gov
The Library of Congress: Portals to the World
http://www.loc.gov/rr/international/portals.html
Museum of the City of New York:
http://www.mcny.org
The National Archives:
http://www.archives.gov/historical-docs
The New York Historical Society:
http://www.nyhistory.org
Schomburg Center for Research in Black Culture
http://www.nypl.org/research/sc/sc.html
Smithsonian Museums:
http://www.si.edu/museums
Tenement Museum of New York:
http://www.tenement.org
The World Factbook:
http://www.cia.gov/cia/publications/factbook/index.html

Science

American Association for the Advancement of Science (AAAS):
http://www.aaas.org
American Museum of Natural History:
www.amnh.org
The Hall of Science:
www.nyhallsci.org
National Science Foundation:
www.nsf.gov
National Oceanic and Atmospheric Administration (NOAA):
www.noaa.gov
NASA Science Learning:
http://science.hq.nasa.gov/education/index.html
The River Project:
www.riverproject.org

Visual Art

American Folk Art Museum:
http://www.folkartmuseum.org
American Institute of Architects:
www.aia.org
El Museo del Barrio:
http://www.elmuseo.org
The Drawing Center:
http://www.drawingcenter.org
The Frick Collection:
http://www.frick.org
Guggenheim Museum:
http://www.guggenheim.org
The Hispanic Society of America:
www.hispanicsociety.org
International Center of Photography:
www.icp.org
The Jewish Museum:
http://www.thejm.org
The Metropolitan Museum of Art:
http://www.metmuseum.org
Museum of Arts & Design:
www.americancraftmuseum.org
Museum of the City of New York:
http://www.mcny.org
Museum of Modern Art:
http://www.moma.org
New Museum of Contemporary Art:
www.newmuseum.org
The Noguchi Museum:
www.noguchi.org
PS 1 Contemporary Art Center:
http://www.ps1.org
Rubin Museum of Art (Art of the Himalayas):
www.rmanyc.org
The Skyscraper Museum:
www.skyscraper.org
Smithsonian Museums:
http://www.si.edu/museums
Socrates Sculpture Park:
http://www.socratessculpturepark.org
Studio Museum of Harlem:
http://www.studiomuseum.org
Whitney Museum of American Art:
http://www.whitney.org

Dance

American Ballet Theatre's Ballet Dictionary: textual definitions & QuickTime demonstrations:
http://www.abt.org/education/dictionary/index.html
The Dance Notation Bureau:
http://dancenotation.org/DNB/
Jacob's Pillow Dance Festival Archives:
http://www.jacobspillow.org/archives/archives.asp
The Library of Congress: I Hear America Singing Project:
www.loc.gov/rr/perform/ihas/ihashome.html
NY Public Library for the Performing Arts:
www.nypl.org/research/lpa/lpa.html
NY Public Library for the Performing Arts: Performing Arts in America 1875-1923:
http://digital.nypl.org/lpa/nypl/lpa_home4.html
National Museum of Dance:
http://www.dancemuseum.org/
Website from PBS Special with links:
http://wnet.org/freetodance/resources.html

Music

American Society of Composers, Authors and Publishers:
http://www.ascap.com
Jazz at Lincoln Center
www.jazzatlincolncenter.org/04_05/education.html
Louis Armstrong Archives at Queens College
http://www.satchmo.net/thearchives/
Metropolitan Museum of Art Musical Instrument Collection:
http://www.metmuseum.org/Works_of_Art/department.asp?dep=18
The Library of Congress: I Hear America Singing Project:
http://www.loc.gov/rr/perform/ihas/ihashome.html
LaGuardia & Wagner Archives: Steinway & Sons Collection:
http://www.steinway.lagcc.cuny.edu/steinway/main.asp 
NY Public Library for the Performing Arts: Performing Arts in America 1875-1923:
http://digital.nypl.org/lpa/nypl/lpa_home4.html

Theater/Film