The average aide salary at Tarkio High was $22,536 , which is 3 percent lower than the average salary for this job in Missouri, and 30 percent lower than the national average for this job . Aide salaries at Tarkio High typically range from $13,418 to $36,194 (25th to 75th percentile). The highest reported aide salary was $36,194. There are 4 employees at Tarkio High with the job title aide.