The board, as provided by section nine, article eight of chapter eleven, shall impose a levy for the maintenance and operation of all schools in the county. This levy shall be uniform throughout the county and the funds shall be distributed and expended without regard to the locality from which collected: Provided, however, That if a majority of the voters of any political subdivision of the county shall file with the board of Education of the county of which such political subdivision is a part, at their budget session as provided by section nine, article eight of chapter eleven, a petition praying for increased salaries, funds for the support and maintenance of libraries, medical and dental clinics, supervision and/or an extension of the school term therein for a given number of months, the board shall extend the term of school for the number of months requested in such petition and shall lay levies sufficiently high on each $100' valuation of taxable property within such political subdivision according to the last assessment thereof for such purpose or purposes as specified in the petition, which levies shall be separated and designated as a special maintenance fund levy and special teachers' fund levy of the political unit for which such levies are laid.

All additional levies so authorized shall be made as provided by law and shall in no case exceed the statutory limitation or maximum for the various classes of property of the political subdivision authorizing the same.

Upon a petition of one hundred taxpayers of any political subdivision of a county to the board of Education of the county of which such political subdivision is a part, the board of Education shall call an election within said political subdivision for the purpose of authorizing the county board of education to lay special increased rates of levy on the property of said political subdivision, as provided by law, for educational purposes as may be set forth in the petition and in the call for the election.

The bonded indebtedness incurred by former magisterial school district boards and independent district boards shall remain the debt of the property originally pledged as security for the payment of the obligation.

The county board shall impose separate levies in the manner provided by sections nine and thirteen, article eight, chapter eleven, upon the property in former magisterial districts and independent districts for the payment of current requirements of principal and interest of bonded indebtedness incurred prior to the creation of the county school districts.