 By the 1890s, the mission increasingly emphasized medical and educational institutional work, founding boarding schools, such as Prince Royal's College and Chiang Rai Witthayakhom School, hospitals and dispensaries in each of the stations.The churches, meanwhile, numbered 37 by 1920, the last year of the mission, and communicate membership numbered 6,649 that same year.The presbytery continued in existence until 1934, when it was incorporated into the Church of Christ in Thailand.