This technical report is an addendum to a study we initially reported on in 2014 (Wray, Lai, Saez, Alonzo, & Tindal, 2014). In response to a request for additional analyses, in particular reporting confidence intervals around the results, we re-analyzed the data from the Wray et al study. This supplementary report presents the results of the additional analyses. Results varied by measure and grade but were generally within "good" or "acceptable" ranges for all measures and grade levels analyzed. [For Technical Report #1403, "easyCBM Beginning Reading Measures: Grades K-1 Alternate Form Reliability and Criterion Validity with the SAT-10," see ED545249.]