John Horn High School

Dr. John Horn High School opened in 2000 as the fifth comprehensive high school in Mesquite ISD. Located on a 50-acre campus, the school serves approximately 3,200 students in grades 9 through 12, drawing from southern Mesquite and the Mesquite ISD portion of Seagoville. In fall 2024, Horn expanded to include a  9th Grade Center, designed to better support the growing student population.

When it first opened, Horn High School welcomed just 550 students in 9th and 10th grade. As the community grew, so did the campus, reaching over 2,000 students by the 2006–2007 school year. 

Our Namesake
Dr. John Horn was a teacher, principal and administrator in Mesquite schools before moving to Allen as superintendent. He returned to Mesquite ISD as superintendent in 1986 where he served until his retirement in 2001. Dr. Horn was a visionary leader who was instrumental in Mesquite ISD becoming a recognized school district. He was selected as Superintendent of the Year in 1996 and provided state leadership service for numerous organizations and initiatives during his tenure as superintendent. In 1999, he received the coveted Golden Deeds Award from Texas A&M University.

Dr. Horn earned his bachelor's degree from East Texas State (Now Texas A&M Commerce) in 1963, and his master's degree from the same institution in 1966. He attained his doctoral degree from the University of North Texas in 1971.

Our Feeder Pattern