...S&P Global Ratings assigned its '###' long-term program rating and '##' underlying rating to Leander Independent School District (ISD), Texas' series 2019C unlimited-tax school building bonds. The outlook is stable. The long-term rating reflects our view of the district's eligibility for, and participation in, the Texas Permanent School Fund (PSF) bond guarantee program, which provides the security of a permanent fund of assets that the district can use to meet debt service on bonds guaranteed by the program. (For more information on the long-term program rating, see our full analysis on the Texas PSF, published June 8, 2018, on RatingsDirect.) Revenue from an unlimited ad valorem tax on all taxable property within the district secures the bonds. Bond proceeds be used to construct and improve various school facilities as well as purchase related equipment and school sites. Leander ISD has been an extremely fast-growing district, adding more than 1,000 students per year, which has resulted...