Shall the limitation on the amount of taxes which may be assessed against all property in Saline Area Schools, Washtenaw County, Michigan, be increased by and the board of education be authorized to levy not to exceed .50 mill ($0.50 on each $1,000 of taxable valuation) for a period of 10 years, 2018 to 2027, inclusive, for the purpose of providing funds for operating a system of public recreation and playgrounds; the estimate of the revenue the school district will collect for such recreation program if the millage is approved and levied in 2018 is approximately $848,689?