Dorris Intermediate School

today, unit 10 covers 57 square miles, providing educational services to students from collinsville, caseyville and maryville, as well as portions of glen carbon, fairmont city and granite city. the school district is comprised of eight elementary schools (grades k-4), one intermediate center (grades 5-6), one middle school (grades 7-8) and one high school (grades 9-12). servicing over 6,500 students, unit 10 employs a staff of approximately 470 certified and 290 non-certified staff members.