Gwinnett County Public Schools is a school district operating in Gwinnett County, Georgia, United States. GCPS is the largest school system in Georgia, with 139 schools and an estimated enrollment of 178,000 students for the 2016-2017 year. GCPS is estimated to be the 14th largest school district in the U.S. The district has its headquarters in an unincorporated area near Suwanee.
GCPS is in the top 10% of the largest school districts in the U.S.
This is not definitely correct or definitely incorrect because based on the information provided, we do not know how many school districts there are in the U.S., so we cannot accurately say where it falls.  The system was fooled because I used verbiage that the system used as well when describing the school district.