MacArthur hosted the first
Texas French Symposium in 1964, and subsequently in 1965, 1966, 1970, 1971, 1974 and 1995. Since its establishment in 1968, the MacArthur Blue Guard (MBG) varsity level armed drill team has continually represented MacArthur's Army Junior Reserve Officers Training Corps (J.R.O.T.C.). Battalion and MacArthur High School with military excellence and precision in U.S. Army platoon drill and exhibition. Since the mid-1980s, MBG has achieved best in state status, to include best armed drill team in the nation at the drill team championships in Daytona Beach, Florida in 1990. In addition to the Blue Guard, MacArthur High School's varsity Color Guard is made up of four members (U.S. Flag, Texas Flag, U.S. Flag Guard and Texas Flag Guard) of the MBG and would present those colors at all home football games as well as compete in competition around the state. MacArthur's football team has made one appearance in the UIL State 5A Championship game in 1998. MacArthur had lost on December 12 to
Katy High School, 14–6. However, Katy's win was forfeited for using an ineligible student during the regular season. Given hours to prepare, MacArthur played in the state title game but lost to
Midland Lee 54–0. MacArthur's baseball team reached the state finals in 1966 in Class 4A, the largest classification at the time. It lost to the Freeport Brazosport Exporters, 6–1. And again in 1987, the baseball team reached the state finals in the UIL Class 5A category, losing to Abilene Cooper, 13–3. The boys'
cross country team placed second behind Churchill in the district cross country meet on November 1, 2008. One runner from MacArthur placed third in the individual division at the district meet. The team finished in 14th place in the Region IV-Meet. One runner from the cross-country team qualified in the top 10 individual division to qualify for the Region IV meet on November 1, 2008. MacArthur High School also has a very active fine arts program, including the marching band, known as "the Big Blue Marching Machine". The MacArthur marching band has stood for excellence for over 37 years. The band has a 27-year record of Superior UIL Sweepstake Awards in marching, concert and sight-reading. The band has been winners of major music contests in Texas, Florida, and California. The band won two State Marching Band Championships in Class 5A, one in 1985, and the other in 1986. In addition, the theater department at MacArthur High School has been outstanding for many years, and won the UIL One Act Theater competition for many years, under the leadership of Charles Jeffries, Luis Munoz, Jerry Knight, and Molly Risso. In 2014, the MacArthur OAP was the only school in NEISD to compete in the state UIL competition, finishing fourth in the state. MacArthur Theater was under the direction of Dean Whitus and Casey O'Bryant. In 2015, under the direction of Dean Whitus and Margaret Tonra, MacArthur was the only NEISD school to make it into the Area competition, and finished in third place and alternate for state competition. In 2007, the Brahmadoras varsity dance team won the kick category at NDA nationals in Orlando, Florida. In 2009, the varsity cheerleaders won the Universal Cheerleaders Association National Championship in the Small Varsity category. In 2010, the varsity football team won the title of District Champions. In March 2015, the Lassies junior varsity dance team won the nationals in the Pom category at NDA Nationals in Orlando, Florida. In 2015, the MacArthur Winter Guard won 1st place in Scholastic A Class at the TCGC Championships in College Station, Texas. Throughout the season, they had won first place at every competition. Their show was entitled "Lose Yourself". In April 2018, the MacArthur Indoor Percussion marching ensemble competed, for the first time in the school's history, at the
Winter Guard International World Championship in Dayton, Ohio. The group, performing their production titled "A Show of Hands," placed 14th overall in their respective Scholastic Marching Open category. ==TAP==