The Doorways training program was designed by the U.S. Agency for International Development (USAID)-funded Safe Schools Program (Safe Schools) to enable teachers, community members and students to prevent and respond to school-related gender-based violence (SRGBV). Teachers can play a central role in violence prevention, and they can also help promote nonviolence with families and communities. "Doorways III: Teacher Training Manual on School-Related Gender-Based Violence Prevention and Response" was designed to train teachers to help prevent and respond to SRGBV by reinforcing teaching practices and attitudes that promote a safe learning environment for all students. Doorways III includes this training manual and "Doorways III: Teacher Reference Materials on School-Related Gender-Based Violence Prevention and Response," which contains content information and materials for participants to use throughout the program. Appendices include: (1) School-Related Gender-Based Violence: Definition and Types; (2) Doorways Training Program Evaluation; and (3) Post-Training Assessment and Answer Key. A glossary and bibliography are included. (Contains 29 footnotes.) [This manual is part of the Doorways program that comprises: (1) "Doorways I: Student Training Manual on School-Related Gender-Based Violence Prevention and Response" (ED507886); (2) "Doorways II: Community Counselor Reference Materials on School-Related Gender-Based Violence Prevention and Response" (ED507889); (3) "Doorways II: Community Counselor Training Manual on School-Related Gender-Based Violence Prevention and Response" (ED507887); and "Doorways III: Teacher Reference Materials on School-Related Gender-Based Violence Prevention and Response" ED507890.]