Data breach involving former Polk County Schools vendor could impact thousands. This issue involves a company hired by Polk Schools to collect information about students using the school’s free and discount meal program. BARTOW, Fla. — A personal data breach could impact thousands of current and former Polk County students. Carol Martell is among the hundreds, perhaps thousands, of parents and students in the Polk school system concerned about a data breach. The information includes names, dates of birth, and student identification numbers. Third-party company: PCS Revenue Systems.