Highest salary at Oswego Cusd 308 in year 2017 was $220,751. Number of employees at Oswego Cusd 308 in year 2017 was 1,932. Average annual salary was $50,903 and median salary was $55,555. Oswego Cusd 308 average salary is 9 percent higher than USA average and median salary is 28 percent higher than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 5.0 percent, the median salary increased 4.2 percent.