Table 7.
Cluster robust meta‐regression for public versus private Montessori setting for academic effect sizes.
| Effect (n of effect sizes) | Hedges’ g | 95% CI of g | df | p |
|---|---|---|---|---|
| Private Montessori (31)a | 0.28 | (0.03, 0.52) | 7.38 | 0.031 |
| Public Montessori (76) | −0.13 | (−0.36, 0.12) | 12.64 | 0.238 |
Note: N of studies = 20, N of effect sizes = 107, assumed ρ = 0.8, I 2 = 71.89. Cluster robust estimates with df < 4.00 should be interpreted with caution (Tanner‐Smith, Tipton, & Polanin, 2016). Positive effect sizes favor Montessori over traditional education.
Abbreviation: CI, confidence interval.
a
Reference category/intercept.