I.Any school district which is providing any child benefit service pursuant to the authority of RSA 189:49 and 50 shall be granted the following proportion of the costs, exclusive of any part of the cost and carrying charges of any capital improvements, of providing such service to any student who regularly attends a nonpublic school within the district for more than 1/2 each school day:(a) Not more than 70 percent of such cost of any such service.II.Application for any such grant shall be submitted by a district to the state board of education no later than the July 1 preceding the start of the school year for which it shall be applicable, provided that the board may, for good cause shown, accept any such application up to but no later than the start of the applicable school year. Payment of said grant shall be made upon submission of certified expenses prior to the end of the applicable fiscal year.III.The board shall determine what costs shall be allowed in computing and the amount of any grant, and shall make payments of such grants from the funds appropriated therefor.IV.In the event that for any year insufficient sums are available to pay grants in full as provided by this section to all qualified applying school districts the state board of education shall prorate such grants so that all such districts receive the same proportion thereof.V.No pupil counted by any school for the purpose of calculating the amount of a grant to be paid pursuant to this section shall for the same school year by the same district be counted for the purpose of grants pursuant to RSA 198:21. 1970, 51:4. 1973, 501:2. 1999, 17:49, eff. April 29, 1999.