Mukwonago Area School District. Food Service Assistant. Title. Food Service Assistants – Rolling Hills Elementary School. Hours. 3 Hours per day (10:15 A.M. – 1:15 P.M.). Description. Serving lunch and performing clean-up tasks in a quantity food service setting. Requires focus on quality and safety in all aspects of the job. Must be outgoing and pleasant with students and staff. Qualifications. 1. High school diploma or equivalency. 2. One year ...