Democrat Dustin Williams, an elementary school mathematics teacher, was elected Pima County schools superintendent Tuesday.
Williams defeated another math teacher, Republican Margaret Burkholder.
The two ran a relatively cordial campaign in which both called for better pay and working conditions for teachers.
Williams will succeed Linda Arzoumanian, who is retiring after 16 years in the job.
In the Tucson Unified School District Governing Board race, two incumbents and one newcomer won the three seats up for election, and a third incumbent was ousted.
Incumbents Mark Stegeman and Kristel Foster retain their seats on the board and will be joined by Rachael Sedgwick, a law student. Incumbent Cam Juarez finished sixth in the seven-person race and will not serve a second term.