In 1873, hoping to ease Albion Bradbury's lung disease, Kate's family moved to Santa Barbara, California, where Kate's stepfather died three years later. A kindergarten training class was opening in Los Angeles under Emma Marwedel (1818–1893), and Kate enrolled. After graduation, in 1878, she headed the first free kindergarten in California, on Silver Street in the slums of San Francisco. The children were "street Arabs of the wildest type", but Kate had a loving personality and dramatic flair. By 1880 she was forming a teacher-training school in conjunction with the Silver Street kindergarten.