The average aide salary at Richland Elem. was $28,750 , which is 24 percent higher than the average salary for this job in Missouri, but 11 percent lower than the national average for this job . Aide salaries at Richland Elem. typically range from $20,000 to $32,505 (25th to 75th percentile). The highest reported aide salary was $43,734. There are 11 employees at Richland Elem. with the job title aide.