This technical appendix provides additional information about the sample, data, and estimation strategy used for a series of American Educator Panels (AEP) Data Notes published by the RAND Corporation in 2019. The Data Note series is intended to provide brief but incisive analyses of teacher and school leader survey results that may be of immediate interest to policymakers, practitioners, and researchers. The information pertains to the second set of three Data Notes, which will be released starting in summer 2019.