(a) The debt incurred by any county, municipality, or other political subdivision of this state, including debt incurred on behalf of any special district, shall never exceed 10 percent of the assessed value of all taxable property within such county, municipality, or political subdivision; and no such county, municipality, or other political subdivision shall incur any new debt without the assent of a majority of the qualified voters of such county, municipality, or political subdivision voting in an election held for that purpose as provided by law.
(b) Notwithstanding subparagraph (a) of this Paragraph, all local school systems which are authorized by law on June 30, 1983, to incur debt in excess of 10 percent of the assessed value of all taxable property therein shall continue to be authorized to incur such debt.