The average aide salary at Hillsboro High was $37,177 , which is 61 percent higher than the average salary for this job in Missouri, and 15 percent higher than the national average for this job . Aide salaries at Hillsboro High typically range from $17,835 to $51,841 (25th to 75th percentile). The highest reported aide salary was $68,122. There are 12 employees at Hillsboro High with the job title aide.