(1) The Superintendent of Public Instruction shall prorate the annual estimate of census as provided in ORS 327.410 and 327.420 in proportion as the resident average daily membership of each education service district bears to the total resident average daily membership of the state and certify such to the administrative officer of each education service district.
(2) Subject to guidelines approved by the Superintendent of Public Instruction, the administrative officer of each education service district shall apportion the census so certified to those common school districts reporting to the education service district. The estimated district census determined by this manner shall be deemed applicable to all statutory references to the term “census” or “school-age child” in Oregon Revised Statutes.