NEW YORK--(BUSINESS WIRE)--Fitch Ratings has assigned an 'AAA' rating to the following Chesterfield County (the county) Virginia general obligation (GO) bonds: --$32.795 million GO public improvement bonds series A of 2015; --$55.485 million GO public improvement refunding bonds series B of 2015. The bonds are expected to price on August 18 via competition. The series A bond proceeds will be used to pay the costs of capital school improvements. The series B bond proceeds will be used to provide