Highest salary at Dupage Hsd 88 in year 2018 was $246,511. Number of employees at Dupage Hsd 88 in year 2018 was 325. Average annual salary was $91,322 and median salary was $104,342. Dupage Hsd 88 average salary is 95 percent higher than USA average and median salary is 140 percent higher than USA median salary. From 2017 to 2018, the average salary of employees at this employer increased 13.6 percent, the median salary increased 11.8 percent.