Arlington Senior High School was a public high school in Saint Paul, Minnesota, United States. It was located in the city's North End neighborhood, north of Downtown Saint Paul. Arlington opened on September 3, 1996, and was the districts first new high school since Humboldt Senior High School opened twenty years earlier. Following the schools closure, Washington Middle School took over the school grounds and the school is now known as the , hosting grades 6-12 and continuing the Bio-SMART program, fulfilling the ultimate goal of Arlington Senior High School.