Table 2.

Dependent Variable Means and Standard Deviations for Analytical Sample, Special Education Students, and Non-Special Education Students

Dependent Variables	Full Sample (N=6,318)	Special Education Students (n=363)	Non-Special Education Students (n=5,955)
Reading IRT Test	143.90 (20.94)	122.91** (24.54)	145.18** (19.99)
Reading IRT Test Score Gain	20.71 (12.40)	23.32** (14.17)	20.55** (12.26)
Math IRT Test	117.30 (19.55)	101.83** (23.44)	118.25** (18.88)
Math IRT Test Score Gain	21.23 (10.36)	20.90 (11.41)	21.25 (10.32)
Approaches to Learning	3.12 (0.66)	2.76** (0.63)	3.15** (0.65)
Approaches to Learning Gain	0.00 (0.62)	0.10** (0.62)	−0.01** (0.62)
Externalizing Behaviors	1.61 (0.55)	1.76** (0.62)	1.60** (0.55)
Externalizing Behaviors Gain	−0.04 (0.55)	−0.06 (0.58)	−0.04 (0.55)
Internalizing Behaviors	1.61 (0.53)	1.88** (0.60)	1.59** (0.52)
Internalizing Behaviors Gain	0.02 (0.62)	0.02 (0.68)	0.02 (0.61)

Note:

^**Means of special education and non-special education students are significantly different at the p< .01 level; SD in parentheses.