The average teacher salary at Cotulla Isd was $56,209 , which is 12 percent lower than the average salary for this job in Texas, and 14 percent lower than the national average for this job . Teacher salaries at Cotulla Isd typically range from $49,600 to $61,235 (25th to 75th percentile). The highest reported teacher salary was $94,771. There are 109 employees at Cotulla Isd with the job title teacher.