JHHS Basics

Our School

Dr. John Horn High School opened in 2000. Our 50-acre campus serves approximately 3,200 students in 9th - 12th grades. We serve the southern portion of Mesquite and the Mesquite ISD portion of Seagoville. 

Our Feeder Pattern





Jags for Life 

Official School Colors

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.

HB3 Board Goals

HB3 requires school boards to adopt detailed plans developed by their management teams that achieve goals in two key areas:

  1. Early childhood literacy and mathematics (EC-LM ) proficiency
  2. College, career, and military readiness (CCMR)

School boards must review the progress of each plan at least annually at a public meeting. These goals will be posted on the district website for the district level goals and on each campus website for the campus level goals once approved. The Board of Trustees approved these goals at the May 9, 2022, meeting. To view a downloadable, printable document containing these goals, click on the following button.

Mesquite ISD 3rd Grade Reading/Math and CCMR Board Goals

Horn Elementary

John Horn High School
3300 East Cartwright Road
Mesquite, Texas, 75181

Phone 972.882.5200 
Fax 972.882.5292

Office Hours:
Monday through Friday
8 am - 4 pm

Summer Hours:
Monday through Thursday
7:30 am - 5 pm

School Health Advisory Council

Visiting Our Campus

All visitors are required to provide a valid driver’s license prior to entering any part of the building.

All visitors are required to enter through the front office where the driver’s license will be scanned through the District’s Raptor system.

Thank you for assisting us in our efforts to keep our students safe!

Title 1 Information

A copy of the Campus Improvement Plan is available for review in the school office upon request.