[citation needed] Because of major growth in the Austin Metropolitan Area, the high school has undergone several expansion projects.

As the only high school in LTISD, it serves Bee Cave, Briarcliff, Lakeway, The Hills, and Hudson Bend,[4] along with 1.4 square miles (3.6 km2) of land within the City of Austin.

[citation needed] The cup is awarded to the states overall top high school based on academic and athletic achievements.

As of the 2019–2020 school year, Lake Travis HS's racial diversity is 68.6% White, 19.4% Hispanic, 5.6% Asian, 4.8% identified as two or more races, 1.3% Black and 0.3% other.

[1] The Football sports team are the "Cavaliers", named after the mascot of the school with uniform colors being red, black and silver.

In that game, LT defeated the #3 ranked Denton Ryan Raiders 27-7; giving the Cavs their fourth consecutive state championship, making them the only 4A or 5A Texas school to accomplish this feat.

[15] Lake Travis won the Texas State High School Rugby Championship in 2013 and is ranked 18th in the nation after only three seasons in existence.

[citation needed] The Sailing Team is based at the Austin Yacht Club and is the only co-ed sport offered at LTHS.

[27] In 2012, the Lake Travis High School Drumline received first place and the title of state champion in the Percussion Scholastic A classification of the Texas Color Guard Circuit,[28] in 2013, received first place and the title of state champion in the Percussion Scholastic Marching Open classification of the Texas Color Guard Circuit.