Credo High School is a tuition-free, public charter school in Rohnert Park, California, inspired by Waldorf education and serving students in ninth through twelfth grades. There are around 250 students for the 2016-17 school year. There are single cohorts of up to 40 students for grades 11 and 12, and a double cohort of 75 sophomores, and a triple cohort of 108 freshmen; the school has been expanding annually since it was established in 2011.