The secretary of the Department of Education shall compute state aid for special education for each school district according to the following calculations: (1) Calculate the local need of a school district; (2) State aid for special education is: (a) Local need minus local effort, the difference multiplied by the effort factor; or (b) Zero if the calculation in (a) is a negative number. Source: SL 1999, ch 90 , § 4; SL 2003, ch 272 , § 63.