Answer the following question: Mark T. Sheehan High School -  Mark T. Sheehan High School is a public high school located at 142 Hope Hill Road Wallingford Connecticut. Its opposite Lyman Hall High School and it are the two high schools within the Wallingford School System along with two middle schools and eight elementary schools. The current principal is Rosemary Duthie and the assistant principals are James Francese and David J. Kimball. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Answer:
Educational Institution