Salary Rankings by degree are calculated using data submitted annually by school districts to the Tennessee Department of Education. Rankings are calculated for the minimum salary, the average salary, and the maximum salary on the provided salary matrix. The average salary is the median salary on the matrix and does not necessarily reflect the arithmetic mean salary if calculated by the number of employees at each step. Although all systems submitted a salary matrix, it should also be noted that not all systems pay teachers on a “traditional” salary schedule where employees move on the schedule based on years of service and degree. Some school systems employ a “merit pay” or “pay-for-performance” schedule. In our rankings, we did not account for how employees move on the schedule.