North Posey Senior High School is a public high school in Poseyville, Indiana. North Posey is the high school for the MSD of North Posey County, which includes Bethel, Robb, Smith, Harmony, Center and Robinson Townships in Posey County, Indiana. North Posey was opened in 1959 after the four separate schools of Poseyville, Cynthiana, Wadesville and Griffin consolidated.