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Evaluation of the DC Opportunity Scholarship Program: Impacts After Two Years

NCES 2009-4023
June 2008


Table 3.  Year 2 Impact Estimates of the Offer of a Scholarship on the Full Sample: Academic Achievement (Intent to Treat or ITT)
 
Treatment Group
Mean
Control Group
Mean
Difference
(Estimated Impact)
Student Achievement Effect Size p-value
Reading  621.30 618.12 3.17 .09 .09
Math  614.09 613.85 .23 .01 .89
NOTES: Means are regression-adjusted using a consistent set of baseline covariates. Impacts are displayed in terms of scale scores. Effect sizes are displayed in terms of standard deviations of the study control group distribution. Valid N for reading = 1,580; math = 1,585. Separate reading and math sample weights were used.