The average plumber salary at Kern High was $144,798 , which is 5 percent higher than the average salary for this job in California, and 63 percent higher than the national average for this job . Plumber salaries at Kern High typically range from $133,584 to $151,956 (25th to 75th percentile). The highest reported plumber salary was $159,044. There are 5 employees at Kern High with the job title plumber.