NEW YORK--(BUSINESS WIRE)--Fitch Ratings has assigned a 'AA' rating to the following Hillsborough County School Board Leasing Corporation's (the corporation) certificates of participation (COPs): --$156,670,000 refunding COPs series 2015A. In addition, Fitch assigns a 'A-' rating to the Hillsborough County School District's, FL (the district) following sales tax revenue bonds: --$66,030,000 sales tax revenue refunding bonds series 2015B. Fitch has also affirmed the following ratings: --Implied