The Perris Indian School was established in 1892 in Perris, Calif. by the Office of Indian Affairs. It was the first residential school established in Southern California, established in order to assimilate Indigenous peoples into the mainstream society. The student population was primarily from California Indian tribes, but there were also eight Pima students. Students' ages ranged from 5 years old to in their early 20s. In 1897, the school's superintendant determined that the water supply at the site was inadequate, and sought funds to build in a new location, which later became the Sherman Institute. Beginning in 1900, students moved from Perris to the Sherman School during a five-year transition; the Perris School closed in December, 1904.