The average custodial salary at Kermit Isd was $24,724 , which is 6 percent lower than the average salary for this job in Texas, and 25 percent lower than the national average for this job . Custodial salaries at Kermit Isd typically range from $23,208 to $24,957 (25th to 75th percentile). The highest reported custodial salary was $30,419. There are 10 employees at Kermit Isd with the job title custodial.