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Impacts of Comprehensive Teacher Induction: Results From the First Year of a Randomized Controlled Study

NCEE 2009-4034
October 2008


Table 3.  Impacts on Math Test Scores
 
  Adjusted Mean Test Scores      
Unweighted Student Sample Sizes
Grade Treatment Control Difference Effect Size p-value Total Treatment Group Control Group
-0.20 0.18 -0.38*† -0.38 0.000 472 226 246
-0.11 0.15 -0.26*† -0.26 0.002 837 469 368
4 0.01 -0.01 0.03 0.03 0.617 1,545 805 740
-0.02 0.02 -0.04 -0.04 0.549 1,510 699 811
6 -- -- -- --   48 24 24
All Grades  -0.03 0.03 -0.05 -0.05 0.184 4,412 2,223 2,189
Source: MPR analysis of data from 2004-2005 and 2005-2006 provided by participating school districts; MPR Teacher Background Survey administered in 2005-2006 to all study teachers.
Notes: Data are regression-adjusted using a least squares model to account for baseline characteristics and clustering of students within schools.
-- Impacts cannot be estimated due to treatment status being confounded with covariates.
*Significantly different from zero at the 0.05 level, two-tailed test.
†Significantly different from zero at the 0.05 level, two-tailed test, after applying a Benjamini-Hochberg correction.