Sioux City North High School has earned a reputation as one of the finest instrumental music programs in the state of Iowa. Under the direction of retired band director Larry Kisor, North High Jazz I has won the Iowa 4A Jazz Championships twelve times with six second place finishes – a record unmatched in the history of the event. The band was also selected to play in New York City at the 2006 Essentially Ellington youth jazz program. That is the highest honor that a high school jazz band can achieve. Other jazz band achievements include: playing at the Montreux Jazz Festival in Switzerland, the IAJE Convention, and at the Midwest Music Convention in Chicago.The North High Jazz studies program includes two jazz bands. Auditions are held in the fall and students begin rehearsing after the conclusion of the marching band season. Jazz I and Jazz Too both rehearse daily from 6:30 to 7:50 AM. Jazz I may also rehearse on selected Saturdays. The jazz bands perform at school concerts, a jazz concert, and compete in a variety of jazz festivals. They may also perform at a variety of community events. Jazz I is under the direction of Kevin Massey, with Jazz Too under the direction of Mark Henderson.