The average aide salary at Hillcrest High was $45,417 , which is 96 percent higher than the average salary for this job in Missouri, and 40 percent higher than the national average for this job . Aide salaries at Hillcrest High typically range from $23,443 to $55,455 (25th to 75th percentile). The highest reported aide salary was $85,690. There are 11 employees at Hillcrest High with the job title aide.