The average aide salary at St. James High was $33,015 , which is 43 percent higher than the average salary for this job in Missouri, and 2 percent higher than the national average for this job . Aide salaries at St. James High typically range from $12,177 to $46,471 (25th to 75th percentile). The highest reported aide salary was $49,540. There are 6 employees at St. James High with the job title aide.