Assistant Principal - High School salary at Plainfield City

The average assistant principal - high school salary at Plainfield City was $119,706 , which is 3 percent higher than the average salary for this job in New Jersey, and 16 percent higher than the national average for this job . Assistant Principal - High School salaries at Plainfield City typically range from $115,373 to $122,347 (25th to 75th percentile). The highest reported assistant principal - high school salary was $129,297. There are 5 employees at Plainfield City with the job title assistant principal - high school.