Level D secretarial/clerical employees are expected to exhibit basic office skills, basic mathematics and communication skills; employees are custodial staff whose primary duties are cleaning, painting, snow removal, and general maintenance for a specifically assigned area and other duties as assigned by the supervisor; special education para educators who primary duties surround special education students, the secretary to the athletic director/physical plant, and aides who assist librarians. Level C employees include all cafeteria workers, including cashiers, whose primary duties include maintaining student discipline in the cafeteria, food preparation, food serving, dish washing, kitchen cleaning, food sales, and other duties assigned by the building principal or lead cook.