Links:
[1] http://www.edutopia.org/sara-bernard
[2] http://www.newsobserver.com/102/story/555251.html
[3] http://www.denverpost.com/headlines/ci_6165854
[4] http://www.boston.com/news/education/k_12/articles/2006/11/30/extra_pay_urged_at_poorest_schools
[5] http://papers.nber.org/papers/W12285
[6] http://aft.org/presscenter/releases/2007/071307.htm