The Mansfield school district was a one high school district for many years. In 1998, the current Summit High School building was opened on Turner-Warnell Road in
Arlington. It was originally the north campus center housing mainly juniors and seniors in the entire district.
Mansfield High School was composed of two campuses – North and South Campus; in 2002, students who would be seniors in the 2002–2003 school year had the option to choose which school they would graduate from. The Mansfield High School name moved to a new building, while the old North Campus building became the site for Summit High School. The South Campus became Brooks Wester Middle School. Again in 2007, another school opened, named
Mansfield Legacy High School. Once again, students had the choice to pick which school they wished to attend. MISD now has five high schools:
Mansfield High, Summit High,
Timberview High,
Legacy High, and
Lake Ridge High, built and opened in 2012. In 2025, Summit High won the state championship in 5A/D2 Boys Basketball. == Alumni ==