Each county clerk, on or before the thirtieth day of June, annually, shall make out and transmit to the state board of education, at Jefferson City, a report of school districts in his county made by him according to the form prescribed by the state board of education; such report to include the amount of income of the school funds of the county, the amount realized from taxes collected therein, the amount of replacement tax under Section 6(2) of Article X of the Constitution of Missouri and the assessed valuation of each district within the county by the categories specified in section 137.115.