There are a number of texts that could be useful for you to consult.
Angrist, Joshua, and Daniel Lang, et al. "Incentives and Services for College Achievement: Evidence from a Randomized Trial." American Economic Journal: Applied Economics 1, no. 1 (2009): 136–63.
Angrist, Joshua D., and Kevin Lang. "Does School Integration Generation Peer Effects? Evidence from Boston's Metco Program." The American Economic Review 94, no. 5 (2004): 1613–34.
Joskow, Paul L. "Contract Duration and Relationship-Specific Investments: Empirical Evidence from Coal Markets." (PDF) The American Economic Review 77, no. 1 (1987): 168–85.
Ellison, Glenn, and Ashley Swanson. "The Gender Gap in Secondary School Mathematics at High Achievement Levels: Evidence from the American Mathematics Competitions." Journal of Economic Perspectives 24, no. 2 (2010): 109–28.
Hoxby, Caroline M. "Does Competition Among Public Schools Benefit Students and Taxpayers?." (PDF) The American Economic Review 90, no. 5 (2000): 1209–38.
Levitt, Steven D., and James M. Snyder, Jr. "The Impact of Federal Spending on House Election Outcomes." The Journal of Political Economy 105, no. 1 (1997): 30–53.
Acemoglu, Daron, and Simon Johnson, et al. "The Value of Political Connections in the United States." Harvard Business School, 2010.
Lee, David S., and Enrico Moretti, et al. "Do Voters Affect or Elect Policies? Evidence from the U.S. House." (PDF - 4.4MB) The Quarterly Journal of Economics (2004): 807.