PRESCHOOL TEACHER’S AIDE. JOB DESCRIPTION. OVERVIEW. The Mission Chattanooga requires an experienced and dedicated preschool teacher’s aide. The primary responsibility of this role is to maintain the health and vibrancy of the Mission Chattanooga Preschool working with children. 6 weeks - 3 years old. Currently hiring for Monday-Thursday for an 8:30a-2:45p shift. (Parents’ Day Out Program). RESPONSIBILITIES OF PRESCHOOL PROGRAM ASSISTANT. Under t...