Tom C. Clark High School is a public high school, operated by the Northside Independent School District, in San Antonio, Texas, United States. Built in 1978 with five main buildings surrounding a courtyard with over 120 class rooms it is one of NISD biggest schools. Clark High School was named after United States Supreme Court Justice Tom C. Clark. Clark serves the NISD portion of Scenic Oaks. In 2015, the school was rated "Met Standard" by the Texas Education Agency.