Dillard McCollum High School is a public high school in San Antonio, Texas, United States in the Harlandale Independent School District. It is classified as a 5A school by the University Interscholastic League (UIL). For the 2021-2022 school year, the school was given a "C" by the Texas Education Agency and earned a distinction for Postsecondary Readiness.

The school was named in honor of Dillard McCollum, who served in the community as a student, teacher, principal, and superintendent for twenty years.

The annual Frontier Bowl is one of the oldest and fiercest high school football rivalry games. It pits the Harlandale High School Indians against the McCollum High School Cowboys at Memorial Stadium. The match-up has a 50-year history.^[2]

• In 1972, McCollum was chosen as the Bellamy Award recipient. Only one high school is chosen in the United States each year, with a 50-year rotation for each state.
• In 1992, Clifton Bennett won the state championship in editorial writing.^[3]

• In 2022, the McCollum Indoor Percussion placed 1st in the TECA State Championship for Indoor Percussion.^[4]

• In 2022, the McCollum Color Guard placed 1st in the TECA State Championship for Color Guard. ^[5]

• In 2022, the McCollum Band received Sweepstakes in UIL for both their Concert and Wind Ensemble Band.

A part of the McCollum band is the McCollum Indoor Percussion and Color Guard, both of which placed 1st in the TECA State Championships (2022).^[6][7] The McCollum Band also is known for going viral in a Fiesta video featuring their rendition of "El Baile de la Gorila (2017).^[8] The McCollum Band is currently headed by Gilbert Borrego, Briann Jasso, and Johan Escalera.

• McCollum Cowboy Band
• Color Guard
• Golds Stars Dance Team
• Cyber Security Club
• National Honor Society
• National Technical Honor Society
• Business Professionals of America
• Anime Club
• Art Club
• Auto Tech
• Spanish Club
• French Club
• ASL Club
• HOSA
• VICA
• Drama Club
• Robotics Club
• Math Club
• Media Club
• J.R.O.T.C
• Gamma Sigma Girls
• TAFE

The McCollum Cowboys compete in the following sports:^[9]

• Baseball
• Basketball
• Cross country
• Football
• Golf
• Soccer
• Softball
• Tennis
• Track and field
• Volleyball
• Marching Band

State Title

• Volleyball
  • 1976(4A)

The School of Leadership and Public Service (SLPS) is a magnet program on campus at McCollum High School. The Department Chair is currently Yvonne Valdez. The program requires numerous hours of community service and encourages students to take on leadership positions throughout the school.^[10]

• Jonathan Joss (Class of 1983), is an actor and the voice of John Redcorn in the animated series King of the Hill^[11]
• Emilio Navaira (Class of 1980), was a Mexican-American musician who performed country and Tejano music^[12]
• Yolanda Saldívar (Class of 1979), is the convicted murderer of Latin music superstar Selena, and is currently serving a life sentence in the Texas Department of Criminal Justice.^[13]
• Carlos Uresti (Class of 1981), is the current Texas State Senator from Senate District 19. He is also a former Texas State Representative, and a San Antonio attorney.^[14]