For the college in Redding, California associated with the Christian and Missionary Alliance, see Simpson University. Simpson College is a four-year, coeducational liberal arts institution situated in Indianola, Iowa, United States, and affiliated with the United Methodist Church. Simpson, which has been fully accredited by North Central Association since 1913, is a small school with approximately 1,400 full-time students and 500 part-time students. In addition to the main campus in Indianola, the college has classroom facilities in West Des Moines and Ankeny.