Three additions.
(1) A Science teacher retention page was added to the article topics.
(2) Pirkle, S. F. (2010, Fall). Stemming the tide: Retaining and supporting science teachers. Science Educator, 20(2), 42-46.
(3) National Center for Educational Statistics. (2010). Beginning teacher longitudinal study. Retrieved May 26, 2012, from http://nces.ed.gov/surveys/btls/