Earl Warren High School

Earl Warren High School is a public school located in San Antonio, Texas, United States. It is a part of the Northside Independent School District. As with all Northside ISD high schools, it is named for a former United States Supreme Court justice - in this case, former Chief Justice Earl Warren. When the school opened, the Warren family donated the robe worn by Earl Warren during the historic Brown v. Board of Education case. The robe is displayed in the school’s front office.

For the 2021-2022 school year, the school was given a "B" by the Texas Education Agency, with a distinction for Top 25% Percent Comparative Academic Growth.

In 2006, the Warren Academic Decathlon team made it to the Texas state competition for the first time. In 2025, the team became the first from San Antonio in 31 years to be crowned the Texas Academic Decathlon Overall State Champion, reaching third place at the National level.

Northside ISD magnet school Construction Careers Academy was founded in 2009 with an academic focus on construction-related skills, and is located on the Warren campus.

On Friday, November 4, 2005, only about 400 of Warren's 3,000 students attended school for the entire day due to threatening messages posted on MySpace; specifically that “two boys were planning to show up at school with guns." The four students who posted the messages on the web site were identified by administrators as “current students of Warren High School”, and faced felony charges, including making terroristic threats and disruption of a high school campus.