The average aide salary at Potosi High was $39,249 , which is 70 percent higher than the average salary for this job in Missouri, and 21 percent higher than the national average for this job . Aide salaries at Potosi High typically range from $19,264 to $55,600 (25th to 75th percentile). The highest reported aide salary was $56,172. There are 11 employees at Potosi High with the job title aide.