The Emergency Substitute Teaching Permit for Prospective Teachers authorizes the holder to serve as a day-to-day substitute teacher in any classroom, including preschool, kindergarten, and grades 1-12 inclusive, or in classes organized primarily for adults. The holder may serve as a substitute for no more than 30 days for any one teacher and may only serve for a maximum of 90 days during the school year. In a special education classroom the holder may serve for no more than 20 days for any one teacher during the school year. The permit is valid for one year and may be renewed only once.