Folger, 1989	Nye, 1992/994	Finn, 2001	Hanushek, 1999
Read SMD [95% CI]
Kindergarten	0.21 [0.15, 0.27]	0.18 [0.12, 0.24]	0.21 [0.15, 0.27]	0.17 [0.11, 0.23]
1. Grade	0.34 [0.28, 0.40]	0.24 [0.18, 0.30]	0.30 [0.24, 0.36]	0.23 [0.17, 0.29]
2. Grade	0.26 [0.20, 0.32]	0.23 [0.17, 0.29]	0.26 [0.20, 0.32]	0.20 [0.14, 0.26]
3. Grade	0.24 [0.18, 0.30]	0.26 [0.20, 0.32]	0.22 [0.16, 0.28]	0.22 [0.16, 0.28]
Mathematics SMD [95% CI]
Kindergarten	0.17 [0.11, 0.23]	0.15 [0.09, 0.21]	0.19 [0.13, 0.25]	0.17 [0.11, 0.23]
1. Grade	0.33 [0.27, 0.39]	0.27 [0.21, 0.33]	0.31 [0.25, 0.37]	0.26 [0.20, 0.32]
2. Grade	0.23 [0.17, 0.29]	0.20 [0.14, 0.26]	0.25 [0.19, 0.31]	0.19 [0.13, 0.25]
3. Grade	0.21 [0.15, 0.27]	0.23 [0.17, 0.29]	0.15 [0.09, 0.21]	0.18 [0.12, 0.24]