On May 16, 1983, Lake Highlands High School was the site of a fatal armed robbery when Billy Conn Gardner (1943-1995) entered the school's office, shot and fatally wounded 64-year-old cafeteria supervisor Thelma Row, and stole $1,600 in cash.

[3][4] On May 30, 2021, valedictorian Paxton Smith replaced her approved speech to the graduating class to attack the limitations on abortion in Texas Senate Bill 8 of the 87th legislature, a heartbeat bill signed by the governor earlier that month.

Under coach Jackie Russell, the school won its first state title in 1964 in Class 2A Cross Country.

[citation needed] The school has also won several district titles in boys Basketball including winning the 1968 and 2023 State Championships in Class 3A and 6A, respectively.

Berkner High School and the eventual sharing of Wildcat-Ram Stadium, that rivalry naturally occurred.

Prior to the installation of the artificial playing surface, Wildcat-Ram had served as the showcase facility for the Dallas Cup youth soccer tournament due to the fact that it was the only facility of its size with natural grass inside Interstate 635.

Wildcat-Ram Stadium earned the nickname "The Boneyard" from LHHS students and fans and local sports media in reference to the team's use of the wishbone formation rushing attach and suffocating defense under then head coach Mike Zoffuto.

The Multi-Purpose Activity Center ("MAC") was completed in 2021 as part of the renovation of the entire campus.

They have also danced in Dublin, Ireland for the St. Patrick's Day parade; in Pearl Harbor, Honolulu, Hawaii, London, England; and Italy.