(a) Beginning the first day of July, one thousand nine hundred ninety-five, and every year thereafter, the allowance to the public employees insurance agency for school employees shall be made in accordance with the following: The number of individuals employed by county boards of education as professional educators pursuant to section four or five-a of this article, whichever is less, plus the number of individuals employed by county boards of education as service personnel pursuant to section five or five-a of this article, whichever is less, multiplied by the average premium rate for all county board of education employees established by the public employees insurance agency finance board. The average premium rate for all county board of education employees shall be incorporated into each financial plan developed by the finance board in accordance with section five, article sixteen, chapter five of this code. Such premiums shall include any proportionate share of retirees subsidy established by the finance board and the difference, if any, between the previous year's actual premium costs and the previous year's appropriation, if the actual cost was greater than the appropriation.
(b) County boards of education shall be responsible for payments to the public employees insurance agency for individuals who are employed as professional employees above and beyond those authorized by section four or five-a, whichever is less, and individuals who are employed as service personnel above and beyond those authorized by section five and five-a whichever is less. For each such employee, the county board of education shall forward to the public employees insurance agency an amount equal to the average premium rate established by the finance board in accordance with subsection (a) of this section: Provided, That the county board shall pay the actual employer premium costs for any county board employee paid from special revenues, federal or state grants, or sources other than state general revenue or county funds.
(c) Prior to the first day of July, one thousand nine hundred ninety-five, nothing in this article shall be construed to limit the ability of county boards of education to use funds appropriated to county boards of education pursuant to this article to pay employer premiums to the public employees insurance agency for employees whose positions are funded pursuant to this article. Funds appropriated to county boards of education pursuant to this article shall not be used to pay employer premiums for employees of such boards whose positions are not, or will not be within twenty months, funded by funds appropriated pursuant to this article.