While expanding its physical footprint, Polk County Public Schools has also built a reputation for educational excellence, as evidenced by its more than 20 nationally accredited workforce academies, five Florida Arts Model Schools, and a rising number of schools offering Advanced Placement and Cambridge International programs. Who We Are: Polk County Public Schools is one of the largest school districts in the nation, encompassing more than 120 schools and serving more than 117,000 students through both traditional K-12 schools and a variety of other programs.