(1) Except as provided in subsection (2) of this section, the board shall determine in each year the amount of money necessary to be raised by taxation and shall fix a rate of levy which, when levied upon every dollar of valuation for assessment of taxable property within the district, will raise the amount required by the district annually to supply funds to defray its expenses, including but not limited to the cost of postsecondary vocational services provided by the area technical college and capital construction.
(2) The first rate of levy to be imposed shall be the mill levy which was contained in the petition for organization and which was voted upon in the election for organization. Thereafter, the rate of levy shall be determined as provided for in subsection (1) of this section.
(3) In accordance with the schedule prescribed by section 39-5-128, C.R.S., the board shall certify to the board of county commissioners of each county within the district, or having a portion of its territory within the district, the rate so fixed in order that, at the time and in the manner required by law for the levying of taxes, such board of county commissioners shall levy such tax upon the valuation for assessment of all taxable property within the district.