Assistant Principal salary at San Mateo Union High

The average assistant principal salary at San Mateo Union High was $185,912 , which is 12 percent higher than the average salary for this job in California, and 92 percent higher than the national average for this job . Assistant Principal salaries at San Mateo Union High typically range from $118,871 to $235,278 (25th to 75th percentile). The highest reported assistant principal salary was $273,952. There are 23 employees at San Mateo Union High with the job title assistant principal.