| Evaluation | Effect | Average Age | Observations | Experimental Evaluation | Country | Intervention |
|---|---|---|---|---|---|---|
| Angrist 2009 | 7 | Grade 12 | 3,821 | Yes | Israel | Students were paid for passing test needed for university admission |
| Angrist 2006 | 6 | Grade 10 | 3,542 | Yes | Colombia | Vouchers for attending private schools covering fees and tuition |
| Angrist 2002 | 8 | Grade 10 | 1,304 | Yes | Colombia | Vouchers for attending private schools covering fees and tuition |
| Levitt 2016 | -4 | Grade 11 | 995 | Yes | United States | Students or families received payments conditional on performance |
| Edmonds 2014 | 9 | 13 | 438 | Yes | Nepal | Scholarship and monthly stipend conditional on school attendance |