The average aide salary at Gladden Elem. was $48,115 , which is 108 percent higher than the average salary for this job in Missouri, and 49 percent higher than the national average for this job . Aide salaries at Gladden Elem. typically range from $37,829 to $46,917 (25th to 75th percentile). The highest reported aide salary was $80,994. There are 5 employees at Gladden Elem. with the job title aide.