The average principal salary at Union Hs was $81,771 , which is 42 percent higher than the average salary for this job in Oklahoma, but 31 percent lower than the national average for this job . Principal salaries at Union Hs typically range from $77,669 to $88,389 (25th to 75th percentile). The highest reported principal salary was $88,389. There are 4 employees at Union Hs with the job title principal.