The oldest part of the building was constructed in 1972, including the old gym and small auditorium. In the 1980s, a second gym was added on the east side of the building. A 1993 addition added more classrooms and a greenhouse on the west side of the building. A new commons area, pool, 679-seat performing arts center, field house expansion, and two wings of classrooms were added to the building in 2005, in addition to renovations in other areas. There is a rock art mural displaying Wisconsin's natural and cultural history in the commons. In 2012, a second floor over a portion of the 2005 addition and a new main office area were added.
Waunakee has had a long time rivalry with fellow Badger North Conference member the DeForest Norskies.
Football
The Waunakee Warriors have made the playoffs in 18 consecutive seasons, won six state championships, finished runner-up four times, and won 16 conference championships. The team shared the state-record for consecutive wins with 48 straight victories from 2009 to 2012, when the record was broken by Kimberly High School in 2016.
Golf (girls)
2010 State champion
Aquatic center
Waunakee High School is equipped with an eight-lane, twenty-five yard pool that is home to the Waunakee Warriors boys' and girls' swim teams. The aquatic center is also open for the community and non-community members for open family swims, fitness swims, swimming lessons and more.
Student newspaper
Waunakee High School’s monthly newspaper is called the Purple Sage. The Purple Sage is printed along with Waunakee’s community newspaper, the Waunakee Tribune. The paper was reestablished in 2002 after a several year hiatus and has been published ever since.
Kokopelli Kafe
Located in Waunakee High School’s school store is Kokopelli Kafe, a coffee shop that sells beverages and treats. Kokopelli Kafe is run by Waunakee High School's students with special needs. It teaches the students transitional work skills and provides interaction between students. Kokopelli Kafe philosophy is reflected in the goal: “Kokopelli Kafe is a school based business that enables students to learn functional, transitional, vocational, and social skill in a “real life” environment.”
Waunakee's Fine Arts Department includes programs in band, orchestra, choir, and drama. Offerings include concert band, symphonic band, wind ensemble, Warrior band, jazz ensemble, jazz combo, chorale, concert choir, Grazioso, a capella choir, Kee Notes vocal jazz, philharmonic orchestra, chamber orchestra, symphony orchestra, folk band, music theory and composition, jazz improvisation, and music history. The WHS drama department participates in the WHSFA One Act Festival each fall. On the first weekend in May, it produces a musical in even-numbered years and a full length non-musical play in odd-numbered years.
