New Leaders is dedicated to promoting student achievement by developing outstanding school leaders to serve in urban schools. RAND Corporation researchers conducted a formative and summative external evaluation of the New Leaders program, its theory of action, and its implementation from 2006 through 2013. This document presents technical appendixes to supplement our main evaluation report (Gates et al., 2014). The intended audience for these appendixes is individuals who seek additional information on the methods used in our analysis or additional district-specific detail. The intended audience includes other researchers and officials in school districts. This research has been conducted in RAND Education, a unit of the RAND Corporation, under a contract with New Leaders. [For the full report, see ED561152. For the research brief, "Principal Preparation Matters: How Leadership Development Affects Student Achievement. Research Brief," see ED561155.]