The Old Leupp Boarding School (OLBS) was a Federal Indian Boarding School in operation from 1909–1942 on the southwest Navajo Reservation. It currently exists as a historical archaeology site, and it is an important place to the local Navajos of Leupp and Birdsprings, Arizona. Due to the nature of cultural resource management projects on the Navajo Reservation, which occur prior to development, in‐depth research of Navajo archaeological sites and collaboration with the Navajo public does not usually occur. With the support of local Navajo communities, my decolonizing research documents the history of the OLBS from a Diné (Navajo) perspective, as I explore Diné survivance and resistance within the context of this school. I argue that children utilized their Diné traditional cultural foundations to survive and resist assimilation imposed upon them by the U.S. government at Leupp. In keeping with Navajo cultural norms, I incorporate non‐destructive research methods including oral history interviews with Navajo elders, who attended the OLBS in the early twentieth century, and archival research to investigate the history of the OLBS. My research contributes to decolonizing and post‐colonial anthropological/archaeological research, Navajo Studies, and Native American and Indigenous Studies.