| Evaluation | Effect | Average Age | Observations | Experimental Evaluation | Country | Intervention |
|---|---|---|---|---|---|---|
| Clotfelter 2007 | 0 | Grade 4 | 1,814,704 | No | United States | Having a teacher with masters degree versus BA degree |
| Harris 2007 | -1 | Grade 4 | 463,616 | No | United States | Having a teacher with masters degree versus BA degree |
| Santibañez 2006 | 0 | Grade 5 | 6,663 | No | Mexico | Having a teacher with a 4-year versus 2-year college education |
| Nye 2004 | 2 | Grade 2 | 6,343 | No | United States | Having a teacher with masters degree versus BA degree |
Graph of Effects
This graph shows the effects of [Number of Evaluations] evaluations of [Program Type] programs. The first evaluation, [Evaluation name 1], estimated an effect of [Estimated effect Eval. 1] points (graphed with the top grey circle). Because this is an estimate, there is uncertainty about what the true effect is. But we know that the true effect will probably lie between a low value of [True effect lie between – Low value, Eval. 1] and a high value of [True effect lie between – High value, Eval. 1] (graphed with the top horizontal line). We can combine the estimates from all the evaluations and compute an average effect of [Estimated effect, Average] (graphed with the black circle). There is also uncertainty about where the true average effect is. But we know that the true average effect probably lies between [True effect lie between – Low value, Average] and [True effect lie between – High value, Average] points (graphed with the bottom horizontal line).
| Evaluation | Effects | Low Value | High Value | Weight in Average Effect (%) |
|---|---|---|---|---|
| Clotfelter 2007 | 0 | 0 | 0 | 97 |
| Harris 2007 | -1 | -3 | 1 | 1 |
| Nye 2004 | 2 | -3 | 8 | 0 |
| Santibañez 2006 | 0 | -1 | 2 | 1 |
| Overall |