AUSTIN--(BUSINESS WIRE)--Fitch Ratings has assigned an 'AAA' rating to the following Canyon Independent School District, Texas' (the district) unlimited tax (ULT) bonds: --$9.2 million ULT refunding bonds series 2015 The bonds are scheduled for a negotiated sale the week of July 27th. Proceeds from the bonds will be used to refund portions of the district's outstanding debt for interest savings. In addition, Fitch assigns 'AA' underlying rating to the series 2015 bonds and affirms the 'AA' on t