Crestwood Secondary School is a public high school, located in Cresco, Howard County, in northeast Iowa. Crestwood is the high school for the Howard–Winneshiek Community School District. It serves students from the cities of Cresco, Chester, Lime Springs, Elma, and Ridgeway. Students from nearby Protivin can choose to attend this school as well. The school district was formed in 1960 by combining the independent school districts and high schools of Cresco, Chester, Elma, Lime Springs, and Ridgeway. The current high school building was built in 1969.