Environment: Work is performed indoors, outdoors, and in bus or vehicle; regularly exposed to wet and/or humid conditions, hot and cold temperatures, moving mechanical parts, dust, fumes, airborne particles, toxic chemicals; frequent in-district travel; occasional statewide travel; occasional irregular and/or prolonged hours. Primary Purpose: Substitute for the bus monitor and ride buses; assist bus driver to ensure safe and orderly transportation of students, and assist students with disabilities while boarding, riding and departing the bus or vehicle.