Highest salary at Terrell Isd in year 2016 was $220,500. Number of employees at Terrell Isd in year 2016 was 561. Average annual salary was $41,885 and median salary was $48,372. Terrell Isd average salary is 11 percent lower than USA average and median salary is 11 percent higher than USA median salary. From 2015 to 2016, the median salary increased 1.2 percent.