Lake Travis High School (LTHS) is rated Exemplary by the Texas Education Agency. LTHS is a comprehensive high school serving approximately 2,200 students in grades 9 through 12. There are more than 180 course selections at Lake Travis and more than 50 student clubs and organizations. In addition, a strong athletic program offers participation in 17 competitive sports. Students also have the opportunity to participate in band, drill team, color guard, cheerleading, choir, orchestra, debate, theater and UIL academic activities.

LTHS operates on an alternating block format with four 90-minute classes meeting every other day. Four 9-week terms comprise the school year. Terms 1 and 2 make up the fall semester from August to December. Terms 3 and 4 make up the spring semester from January to May. Most courses will meet every other day, all year (36 weeks). If a course is double-blocked it will meet every day, all year and consume two of the eight total blocks.