Middletown High School serves 9th through 12th grade students in the Enlarged City School District of Middletown, which covers that city as well as adjacent portions of the towns of Wallkill and Wawayanda in Orange County, New York, United States. It is located on Gardner Avenue in a small outlying area of the city, near the county fairgrounds on a small rise south of NY 211.

The school, formerly Anthony Veraldi Junior High School, built in 1959, replaced the building now known as Twin Towers Middle School as the district's high school in 1976 after a major expansion. It has been expanded at least four times since then.