The average auxiliary salary at Austin Isd was $27,954 , which is 15 percent higher than the average salary for this job in Texas, and 680 percent higher than the national average for this job . Auxiliary salaries at Austin Isd typically range from $20,880 to $34,316 (25th to 75th percentile). The highest reported auxiliary salary was $78,537. There are 3,619 employees at Austin Isd with the job title auxiliary.