...Standard & Poor's Ratings Services assigned its '###' program rating and '##-' underlying rating for credit program and stable outlook to Leander Independent School District, Texas' series 2016 unlimited-tax general obligation (GO) refunding bonds and affirmed its '##-' long-term rating; underlying rating (SPUR); and underlying rating for credit program, with a stable outlook, on the district's existing unlimited-tax GO debt. The 2016 bonds are payable from an unlimited ad valorem property tax levied on all taxable property in the district. Officials intend to use series 2016 bond proceeds to refund portions of the district's existing debt for a net present value savings. The program rating reflects our assessment of the district's eligibility for the Texas Permanent School Fund bond guarantee program. The '##-' rating reflects our opinion of the district's general creditworthiness, including its:...