The school opened in 1996 to relieve overcrowding at nearby Franklin High School. In 2014, a new 500-seat performing arts center was constructed. The new auditorium includes dressing rooms and set storage space and was built as part of a multi-phase project that called for building auditoriums at all Williamson County middle and high schools.
Academics and testing
In 2016, Centennial had its highest graduation rate to date: 95 percent. The average ACT score was a 21.9, with 83 percent of the graduates planning on attending a four-year college. The school offers 23 Advanced Placement courses. In 2016, 491 students took a combined 906 AP exams.
Arts
Band/Orchestra
The Centennial band program comprises a fall marching band, winter color guard and percussion units, concert ensembles, and a jazz band. Centennial also offers orchestra and guitar classes during the school day.
The Centennial Theatre program operates under the name Center Stage Productions. Each year, the crew produces a fall play and a spring musical. The theatre program also sponsors a chapter of the International Thespian Society, an honor society for theatre students.
Special programs
WIT Center
Williamson's Information TechnologyCenter of Excellence at Centennial High School launched in fall 2014. The center is part of a collaboration between Williamson County Schools and Columbia State Community College. The center includes classes in networking, computer programming, web development, application design for both computers and mobile devices, and robotics. Students enrolled in these classes earn college credit for the courses in addition to credits toward high school graduation.
Cosmetology Center
Centennial is the only Williamson County high school that offers a cosmetology program. Students earn class credit that can be transferred to several cosmetology schools in the southeast. Additionally, students can accrue state board hours for post-secondary credit.
Athletics
TSSAA-sanctioned sports
Centennial offers the following TSSAA-sanctioned teams. No teams have won a state championship, but the boys' soccer team has won a single state runner-up title and the 2015 football team won the school’s first ever region championship.
Baseball
Boys' basketball
Girls' basketball
Bowling
Boys' cross country
Girls' cross country
Football: 2015 and 2016 Region Champions
Boys' golf
Girls' golf
Boys' soccer: 2010 state champion runner-up
Girls' soccer
Softball
Boys' tennis
Girls' tennis
Boys' track
Girls' track
Volleyball
Wrestling
Club Sports
In addition to TSSAA sports, the school also has numerous club sports. Years in bold indicate state championships. Years in italics indicate state runners-up.