Sec. 20. (a) If a referendum is approved by the voters in a school corporation under this chapter in a calendar year, another referendum may not be placed on the ballot in the school corporation under this chapter in the following calendar year.
(b) Notwithstanding any other provision of this chapter and in addition to the restriction specified in subsection (a), if a school corporation imposes in a calendar year a referendum levy approved in a referendum under this chapter, the school corporation may not simultaneously impose in that calendar year more than one (1) additional referendum levy approved in a subsequent referendum under this chapter.