These are the appendixes for the report, "Variation in Mentoring Practices and Retention across New Teacher Demographic Characteristics under a Large Urban District's New Teacher Mentoring Program." A large urban school district wanted to understand how its first-year teacher mentoring program might better support the district goals of increasing retention and maintaining a diverse workforce. This study investigated new teachers' participation in that program; how participation varied across teacher characteristics, especially how participation varied by the racial/ethnic makeup of new teacher-mentor pairs; and how participation in various aspects of the program was related to new teacher retention after the first year. The appendixes to the study include: (1) Supporting analyses; (2) Other analyses; and (3) New Teacher Mentoring program survey for new teachers. [For the full report, see ED614819. For the Study Brief, see ED614820. For the Study Snapshot, see ED614821.]