severe physical,behavioral, cognitive or vision disabilities; hearing screenings; language translation, preschool, middle school, etc.), under the supervision of assigned certified staff; observing and documenting student progress; assisting students by providing for special health care, social development, learning and language needs; and providing progress monitoring to assigned certified staff. restrooms, playgrounds, hallways, library, cafeteria, bus stops, study hall, locker room, classroom, field trips, assemblies, etc.) for the purpose of modeling appropriate behavior/social skills and providing a safe and positive learning environment in school or community.