The Tennessee Secondary School Athletic Association administers sporting events for an estimated 110,000 participants, 374 schools, 4,000 coaches, 3,000 officials, and 5,500 teams in the state of Tennessee. First organized in 1925, the TSSAA oversees athletic functions of both public and private schools. It includes schools throughout the state of Tennessee.

TSSAA become the 26th state high school governing body to recognize the sport of Lacrosse. Boys’ Lacrosse begins play with the 2024-2025 school year.