The average preschool salary at Union Twp was $73,343 , which is 13 percent higher than the average salary for this job in New Jersey, and 43 percent higher than the national average for this job . Preschool salaries at Union Twp typically range from $61,388 to $82,895 (25th to 75th percentile). The highest reported preschool salary was $95,801. There are 9 employees at Union Twp with the job title preschool.