(a) It is the public policy of the state of Kansas to require school districts to adopt a local option budget pursuant to Kan. Stat. Ann. § 72-5143, and amendments thereto, as part of the system for finance of the educational interests of the state. Commencing in school year 2018-2019, all school districts shall have a local option budget that is at least 15% of such school district’s total foundation aid.

(b) In any action challenging the adequacy of the state’s provision for finance of the educational interests of the state, the aggregate amount of moneys provided for school districts from the adoption of a local option budget required under Kan. Stat. Ann. § 72-5143(a), and amendments thereto, shall be included in determining the adequacy of the amount of total funding provided by the legislature in making suitable provision for finance of the educational interests of the state. The aggregate amount of moneys provided for school districts from the adoption of a local option budget in excess of the amount required under Kan. Stat. Ann. § 72-5143(a), and amendments thereto, also may be included in determining the adequacy of the amount of total funding provided by the legislature in making suitable provision for finance of the educational interests of the state.