Highest salary at Mercer High in year 2016 was $63,204. Number of employees at Mercer High in year 2016 was 18. Average annual salary was $33,890 and median salary was $35,154. Mercer High average salary is 28 percent lower than USA average and median salary is 19 percent lower than USA median salary. From 2015 to 2016, the median salary increased 5.5 percent.