Highest salary at Prosper Isd in year 2017 was $343,170. Number of employees at Prosper Isd in year 2017 was 1,159. Average annual salary was $46,687 and median salary was $50,300. Prosper Isd average salary is the same as USA average and median salary is 16 percent higher than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 2.9 percent, the median salary increased 2.0 percent.