Sec. 51.515.  ORDER ADOPTING TAX PLAN.  (a)  After all persons have been heard, the board may approve the proposed tax plan or may change or modify the plan.
(b)  The board shall adopt a tax plan which it considers, under the evidence before it, most equitably distributes the tax burden and conserves the public welfare.
(c)  The board shall enter its order establishing the tax plan, and the plan shall become the basis for the assessment and collection of taxes until the district adopts a different plan.
(d)  The order is not subject to judicial review except on the ground of fraud, palpable error, or arbitrary and confiscatory abuse of discretion.
(e)  A new plan may be adopted if required to preserve equity of distribution in the manner provided for adopting the original plan;  however, no change may be made in the tax plan which will impair the ability of the district promptly to meet all outstanding obligations of the district within the intent of Sections 51.434 and 51.437 of this code.
Acts 1971, 62nd Leg., p. 352, ch. 58, Sec. 1, eff. Aug. 30, 1971.