1. Department of Economics, and Abdul Latif Jameel Poverty Action Lab (J-PAL), Massachusetts Institute of Technology (MIT), 50 Memorial Drive, E52-252D, Cambridge, MA 02142, and National Bureau of Economic Research (NBER).
2. Pratham/ASER, Y.B. Chavan Centre, Gen J Bhosale Marg, Nariman Point, Mumbai 400001, India.
3. Department of Economics and J-PAL, MIT, 50 Memorial Drive, E52–252G, Cambridge, MA 02142 and NBER.
4. J-PAL, Massachusetts Institute of Technology, 30 Memorial Drive, E60–275, Cambridge, MA 02142.
5. Development Research Group, The World Bank, 1818 H Street NW, Washington, DC 20433.