Thomas Jefferson High School is a secondary school in Northwest Dallas, TX that serves grades 9-12. The school is part of the Dallas Independent School District and its permanent address is 4001 Walnut Hill Lane, Dallas, TX 75229. The school is named after the third President of the United States, Thomas Jefferson, and locally is known simply as "TJ." The school's colors are Columbia blue and Cardinal red. Our mascot is the Patriot.