The average aide salary at North Middle was $47,886 , which is 107 percent higher than the average salary for this job in Missouri, and 48 percent higher than the national average for this job . Aide salaries at North Middle typically range from $27,096 to $59,656 (25th to 75th percentile). The highest reported aide salary was $132,654. There are 12 employees at North Middle with the job title aide.