(a) The board may borrow money at a rate of not more than 10 percent a year on district notes to pay the obligations if the board declares that money is not available to meet authorized district obligations, which creates an emergency.
(b) To secure a loan, the board may pledge:
(1) district revenue that is not pledged to pay the district’s bonded indebtedness;
(2) a district tax to be imposed by the district in the next 12-month period that is not pledged to pay the principal of or interest on district bonds; or
(3) district bonds that have been authorized but not sold.

(c) A loan for which taxes or bonds are pledged must mature not later than the first anniversary of the date the loan is made. A loan for which district revenue is pledged must mature not later than the fifth anniversary of the date the loan is made.
(d) Money obtained from a loan under this section may be spent only for:
(1) a purpose for which the board declared an emergency; and
(2) if district taxes or bonds are pledged to pay the loan, the purposes for which the taxes were imposed or the bonds were authorized.