The average teacher salary at Gilmer Isd was $47,294 , which is 26 percent lower than the average salary for this job in Texas, and 28 percent lower than the national average for this job . Teacher salaries at Gilmer Isd typically range from $38,000 to $52,318 (25th to 75th percentile). The highest reported teacher salary was $114,280. There are 185 employees at Gilmer Isd with the job title teacher.