Guilford County Schools | 14,346 followers on LinkedIn. GCS is the third largest school district in North Carolina, serving nearly 70,000 students. The second largest employer in a 12-county area, GCS’ more than 10,000 full- and part-time employees enthusiastically share the district’s mission: to graduate responsible citizens prepared to succeed in higher education or the career of their choice. The district’s 127 schools, located in both urban and rural areas, include elementary schools serving grades K through 5, and in some instances, pre-K through 5.