In any school year, a school board may expend from its funds a sum not to exceed three percent of that year's school budget for any necessary health service for a student whose parents are unable to pay for it. Expenditures for this purpose may include the purchase eyeglasses and the provision of dental and other health services approved by the school nurse. The right to determine who is covered under this section shall be in the discretion of the school board. (Amended 2013, No. 56, § 10, eff. May 30, 2013.)