1. Aaronson, D., Barrow, L., & Sander, W. (2002). Teachers and student achievement in the Chicago public high schools. Federal Reserve Bank of Chicago, Working Paper Series, WP-02-28.
2. Teacher testing, teacher education, and teacher characteristics;Angrist;American Economic Review,2004
3. Angrist, J. D., & Guryan, J. (2007). Does teacher testing raise teacher quality? Evidence from state certification requirements. Princeton University Education Research Section Working Paper #21.
4. Professionalism and the public good: A brief history of teacher certification;Angus,2001
5. Astin, A. W., Green, K. C., Korn, W. S., & Maier, M. J. (1983). The American freshman: National norms for fall 1983. Cooperative Institutional Research Program of the American Council on Education, Higher Education Research Institute, Graduate School of Education, UCLA.