The average aide salary at Belle Elem. was $29,327 , which is 27 percent higher than the average salary for this job in Missouri, but 9 percent lower than the national average for this job . Aide salaries at Belle Elem. typically range from $14,815 to $40,280 (25th to 75th percentile). The highest reported aide salary was $44,055. There are 9 employees at Belle Elem. with the job title aide.