1. Obama B. H. Remarks by the President to the Hispanic Chamber of Commerce on a Complete and Competitive American Education (Office of the Press Secretary White House 10 March 2009).
2. Betts J. R. Tang Y. E. The Effect of Charter Schools on Student Achievement: A Meta-Analysis of the Literature (National Charter School Research Project Center on Reinventing Public Education Bothell WA 2011); www.crpe.org/cs/crpe/download/csr_files/pub_NCSRP_BettsTang_Oct11.pdf.
3. Betts J. R., Tang Y. E., Zau A. C., in Taking Measure of Charter Schools: Better Assessments, Better Policymaking, Better Schools, , Betts J. R. , Hill P. T. , Eds. (Rowman & Littlefield, Lanham, MD, 2010), chap. 2.
4. Abdulkadiroglu A. et al.. Informing the Debate: Comparing Boston's Charter Pilot and Traditional Schools (The Boston Foundation Boston 2009); www.tbf.org/uploadedFiles/tbforg/Utility_Navigation/Multimedia_Library/Reports/InformingTheDebate_Final.pdf.
5. Angrist J. D., Dynarski S. M., Kane T. J., Pathak P. A., Walters C. R., Am. Econ. Rev. Pap. Proc. 100(2), 1 (2010).