Table 1. Impacts on Classroom Practices (Average Score on a 5-Point Scale)

Table 1. Impacts on Classroom Practices (Average Score on a 5-Point Scale)

Outcome	Treatment	Control	Difference	Effect Size	P-value
Implementation of literacy lesson	2.7	2.6	0.0	0.02	0.766
Content of literacy lesson	2.4	2.4	0.0	-0.01	0.875
Classroom culture	3.1	3.0	0.0	0.04	0.629
Unweighted Sample Size (Teachers)	342	289
Source: MPR classroom observations conducted in spring 2006; MPR Teacher Background Survey administered in 2005-2006 to all study teachers.
Notes: Data are weighted and regression-adjusted using ordinary least squares to account for differences in baseline characteristics and the study design. Scoring scale: (1) no evidence, (2) limited evidence, (3) moderate evidence, (4) consistent evidence, or (5) extensive evidence of effective teaching practice.
None of the differences is statistically significant at the 0.05 level, two-tailed test.