Highest salary at Grasslake Sd 36 in year 2015 was $42,116. Number of employees at Grasslake Sd 36 in year 2015 was 16. Average annual salary was $19,934 and median salary was $16,977. Grasslake Sd 36 average salary is 57 percent lower than USA average and median salary is 61 percent lower than USA median salary.