By 1991 the East End area schools Austin High School and Milby High School had among the largest enrollments in Texas. In December of that year school district trustees voted to construct a new high school in September 1995 instead of 1997 due to the severity of overcrowding. By 1997 the new high school had not yet been constructed; area community leaders and parents anticipated the construction of Chávez as Austin and Milby were still overcrowded. In the fall of 2000, Chávez opened and took most of Milby's traditional neighborhoods. In turn Milby absorbed some students from Austin. A group called the Unidos Contra Environmental Racism protested the school's proximity to many chemical plants soon after it opened; the school is less than from plants owned by Texas Petroleum, Denka Chemical, USS Chemical, and Goodyear Chemical. Juan Parras, the leader of the UCER group, stated that the school would take the brunt of a chemical leak. Heather Browne, a spokesperson for Houston ISD, stated that the Chavez site was tested for environmental hazards in the air and soil in 1992 and 1996; no problems were found in the tests. Browne also stated that one park, three public swimming pools, the City Hall of South Houston, and one golf course are within of Chavez. In 2007, an Associated Press/Johns Hopkins University study referred to Chávez as a "dropout factory" where at least 40% of the entering freshman class does not make it to their senior year. During that year 21% of high school age children zoned to Chávez chose to attend a different Houston ISD school. In 2014 HISD superintendent Terry Grier stated that Chávez should reduce its enrollment to around 3,000 students.
Chavez fields eighteen varsity teams in the University Interscholastic League's Region III, District 20-5A with the Houston Independent School District's largest high schools. The campus has a field house that includes an athletic training room, weight room, team meeting rooms, coaches' offices, coaches and officials' lockers, and large locker room areas for male and female athletes. Other campus athletic facilities include an 8-lane all-weather track, 4 tennis courts, an outdoor basketball court, a practice gymnasium, basketball court, secondary weight room, natatorium with olympic-sized competition pool, football, baseball, softball, soccer fields, and a cross country running course over wooded terrain. Varsity sports offered at the school include:
Cross Country
Volleyball
Football
Soccer
Baseball
Softball
Basketball
Wrestling
Golf
Tennis
Track & Field
Chavez High School has a band and orchestra program, as well a choir and piano class. Chavez also has a Theatre program that consists of acting, musical theatre, and tech.
In media
In the 2011 novel What Can't Wait, the sports team of the Houston high school attended by the main character is the "Loyal Lobos". Chávez High's real-life mascot is the "Lobos", and the novel's author, Ashley Hope Pérez, once worked as a teacher at Chávez. In the acknowledgements section Pérez thanked the students of Chávez High.
Feeder pattern
Elementary schools that feed into Chavez include:
Bonner
Park Place
Patterson
Cornelius
Lewis
Rucker
Sanchez
Middle schools that feed into Chavez include:
Ortiz
Deady
Stevenson
Notable alumni
Juan Díaz - World Boxing Association's Lightweight Champion