Job Description. Extended Care Supervisor. Purpose and Scope. Responsible for the supervision of 5-10 students in before care from 6:30am-8:00am and 15-20 studentsĀ in an aftercare setting from 3:00pm-5:30pm on school days. With the 2nd Wednesday of each month being from 2:00pm-5:30pm. (If only interested in before care or just after care, that can be worked out as well.) Provide a well-organized, smoothly functional environment in which students ...