Jefferson Lab
Virginia State SOL practice tests for Science and Math (grades 3 and 5)
http://education.jlab.org/solquiz/index.html

Grade 3: Science, Math, Reading , Writing and History http://www.iq.poquoson.org/studyreleaseditems3.html

Grade 4: Science, Math, Reading, Social Studies
http://www.iq.poquoson.org/index.html
http://www.virginiasol.com/test/1861.htm - VA History to 1861
http://www.virginiasol.com/test/1861p2.htm - VA History to 1861 part 2
http://www.virginiasol.com/test/civwar.htm - VA History 1851 to Present

Grade 5: Science Math, Reading and Writing http://www.iq.poquoson.org/studyreleaseditems5.html
Science
http://www.virginiasol.com/test/aearth.htm Earth Science
http://www.virginiasol.com/test/flower.htm Plants
http://www.virginiasol.com/test/light.htm Sound and Light
http://www.virginiasol.com/test/matter.htm Matter
http://www.virginiasol.com/test/rain.htm Weather
http://www.virginiasol.com/test/space.htm Solar System Explorer
http://www.virginiasol.com/test/waves.htm Oceans

Grade 6:
Social Studies
http://www.virginiasol.com/test/1861.htm - VA History to 1861 http://www.virginiasol.com/test/1861p2.htm - VA History to 1861 part 2 http://www.virginiasol.com/test/civwar.htm - VA History 1851 to Present
Math, Science, Social Studies, and Reading
http://www.guest.portaportal.com/solmath

Virginia Department of Education SOL practice site http://www.virginiasol.com/test.htm