The only high school in the Kennedale Independent School District, it serves students in Kennedale and a small part of Arlington.

Activities and student groups at Kennedale High School include Art Club, Anime Club, Business Professionals of America, Choir, Computer Science Society, Friends of Rachel, Key Club, Kindness in Students Spreads, National Honor Society, Spanish National Honor Society, Outdoor Education Society, Spanish Club, Student Council, Thespians, UIL Academics, UIL Speech & Debate, and Yearbook.

As of 2014, Kennedale High School competes in the AAAA, or 4A, classification of the University Interscholastic League.

The Wildcats, known as the Lady Kats in women's leagues, compete in baseball, basketball, cheerleading, cross country, drill team, football, golf, powerlifting, soccer, softball, tennis, track and field, swimming, and volleyball.

The KHS Varsity Wind Ensemble has qualified as a state finalist in the ATSSB Outstanding Performance Series competition.