• This itinerant department is responsible for the vision and hearing screenings of Gwinnett County students at all schools in GCPS. Students are referred for a vision/hearing screening by either the Student Support Team or Special Education Case manager at their local school. Any student that fails any part of the vision-hearing screening is referred for further evaluation. These technicians also work annually with each elementary school to conduct "mass screenings" for all GCPS third grade students. Each school year more than 24,000 GCPS students receive a vision/hearing screening.