Middletown High School is a public high school located in Middletown, Delaware, United States.[2] It is one of three high schools in the Appoquinimink School District and serves students grades 9–12.[1] It was previously located in what is now the Everett Meredith Middle School building.[3] Originally opened in 1997, the current facility added a two-story wing in the summer of 2002, and an expansion of its cafeteria/lobby to create extra capacity.[4]