Assistant Principal salary at San Marcos Unified

The average assistant principal salary at San Marcos Unified was $160,782 , which is 3 percent lower than the average salary for this job in California, but 66 percent higher than the national average for this job . Assistant Principal salaries at San Marcos Unified typically range from $160,483 to $183,768 (25th to 75th percentile). The highest reported assistant principal salary was $189,813. There are 30 employees at San Marcos Unified with the job title assistant principal.