Table 1.

Means and Standard Deviations of Primary Measures and Demographic Variables

		Mean	SD
Student Grade in School		8.3	1.5
Teacher Age		41.2	10.6
Teacher Education Level		5.4	1.2
Number of Years Teaching		10.8	10.7
Class Size		22.8	6.1
Prior Year Achievement Test Score		461.6	75.85
End-of-year Achievement Test Score		456.9	74.15
			N
Student Gender	Male		348
	Female		295
Student Race/Ethnicity	Asian		7
	African-American		154
	Hispanic		26
	White		456
Students’ Family Poverty Status	Low-income		200
	Non-low-income		420
Teacher Gender	Male		17
	Female		20
Teacher Race/Ethnicity	African-American		1
	White		32
	Pacific Islander		1
	Multi-racial		3
Teacher Education Level	Bachelor’s Degree		11
	Post Bachelor’s Training		26