AUSTIN, Texas--(BUSINESS WIRE)--Fitch Ratings has assigned an 'AAA' rating to the following unlimited tax (ULT) bonds of Waxahachie Independent School District, Texas (the district): --$75 million ULT school building bonds, series 2015. The 'AAA' rating reflects the guarantee provided by the Texas Permanent School Fund (PSF), whose bond guarantee program is rated 'AAA' by Fitch. Additional information on the Texas Permanent School Fund is available in Fitch's Sept. 4, 2014 press release, 'Fitch