| Evaluation | Effect | Average Age | Observations | Experimental Evaluation | Country | Intervention |
|---|---|---|---|---|---|---|
| Newman 2012 | 6 | Grade 6 | 18,712 | Yes | United States | Training of teachers, materials and technology to improve instruction |
| Lloyd 2015 | -1 | Grade 8 | 2,575 | Yes | United Kingdom | Students received weekly 20-minute tutoring by 2 years older students |
| Berlinski 2013 i | -17 | Grade 7 | 2,266 | Yes | Costa Rica | Manuals, workbooks, teacher training for new curriculum implementation |
| Garet 2011 | -1 | Grade 7 | 2,203 | Yes | United States | Teacher training, coaching for teaching of positive rational numbers |
| Kemple 2008 ii | 5 | Grade 9 | 1,273 | Yes | United States | Teachers received 5-day training, coaching and seminars for reading |
| Allen 2011 | -3 | N/A | 1,266 | Yes | United States | Teachers received feedback on their classes from trained consultants |
| Kemple 2008 i | 7 | Grade 9 | 1,140 | Yes | United States | Teachers received 5-day training, coaching and seminars for reading |
| McEwan 2015 | 9 | Grade 6 | 1,012 | No | Honduras | Flexible teacher contracts and alternative recruitment practices |
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 (%) |
|---|---|---|---|---|
| Allen 2011 | -3 | -12 | 6 | 10 |
| Berlinski 2013 i | -17 | -30 | -4 | 6 |
| Garet 2011 | -1 | -8 | 6 | 14 |
| Kemple 2008 i | 7 | -1 | 15 | 12 |
| Kemple 2008 ii | 5 | -3 | 13 | 12 |
| Lloyd 2015 | -1 | -8 | 6 | 15 |
| McEwan 2015 | 9 | -8 | 26 | 4 |
| Newman 2012 | 6 | 4 | 8 | 28 |
| Overall |