Highest salary at Isaac Charter Sch in year 2018 was $148,512. Number of employees at Isaac Charter Sch in year 2018 was 25. Average annual salary was $63,530 and median salary was $55,241. Isaac Charter Sch average salary is 36 percent higher than USA average and median salary is 27 percent higher than USA median salary. From 2017 to 2018, the average salary of employees at this employer increased 4.8 percent, the median salary increased 3.6 percent.