Highest salary at Mathis Isd in year 2017 was $116,840. Number of employees at Mathis Isd in year 2017 was 267. Average annual salary was $37,956 and median salary was $41,825. Mathis Isd average salary is 19 percent lower than USA average and median salary is 4 percent lower than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 1.3 percent, the median salary increased 4.0 percent.