Alonzo, J. & Anderson, D. (2018). Supplementary report on easyCBM PRF measures: A follow-up to previous technical reports. (Technical Report No. 1806). Eugene, OR: Behavioral Research and Teaching, University of Oregon. In response to a request for additional analyses, in particular reporting confidence intervals around the results, we re-analyzed the data from prior studies. This supplementary report presents the results of the additional analyses addressing classification accuracy, reliability, and criterion-related validity evidence. For ease of reference, we organize this technical report into sections based on the type of evidence being presented. TechRpt_1806