Hart High School's mascot had been an Indian since the school's foundation in 1945, until June 2020, when students urged principal Jason d'Autremont to discontinue the mascot, which they characterized as
outdated and offensive. An online petition to change the mascot gathered thousands of signatures. D'Autremont, with help from the Santa Clarita City Council, acted on these complaints. In a student survey conducted on March 12, 2021, 49% of students favored keeping the mascot, 26% favored changing it, and 25% had no preference. On July 14, 2021, the board of the William S. Hart Union High School District voted 4-1 to retire the mascot by 2025. On March 19, 2024, after an election amongst staff and students, it was decided that the new mascot would be the Hawks, starting with the 2024-25 school year. ==Notable alumni==