The average aide salary at Salem Sr. High was $33,450 , which is 45 percent higher than the average salary for this job in Missouri, and 3 percent higher than the national average for this job . Aide salaries at Salem Sr. High typically range from $32,950 to $36,800 (25th to 75th percentile). The highest reported aide salary was $40,100. There are 8 employees at Salem Sr. High with the job title aide.