The average maintenance salary at Seguin Isd was $43,986 , which is 21 percent higher than the average salary for this job in Texas, but 4 percent lower than the national average for this job . Maintenance salaries at Seguin Isd typically range from $33,790 to $48,576 (25th to 75th percentile). The highest reported maintenance salary was $97,647. There are 14 employees at Seguin Isd with the job title maintenance.