N.J. Stat. § 18A:56-16
In the event that a school district or a county or municipality anticipates that it will be unable to meet the payment of principal or interest on any of its bonds issued for school purposes after December 4, 1958, it shall certify such liability to the commissioner and the Director of the Division of Local Finance at least 10 days prior to the date any such payment is due. If the commissioner and director shall approve said certification, they shall immediately certify the same to the trustees of the fund for the support of public schools. Upon the receipt thereof, or in the event any such district, county or municipality fails to certify its anticipated inability to meet any such payments, upon notice and verification of such inability, the trustees shall, within the limits of the school bond guaranty reserve established within the fund purchase any such bonds at a price equivalent to the face amount thereof or pay to the holder of any such bond the interest due or to become due thereon, as the case may be, and such purchases and payments of interest may continue so long as the district, county or municipality remains unable to make such payments. Upon making any such payment of interest, the trustees of the fund shall be subrogated to all rights of the bondholder against the issuer in respect to the collection of such interest and if such interest is represented by a coupon such coupon shall be delivered to the trustees of the fund.
The State Treasurer shall act as agent of the trustees of the fund in making any such payments or purchases, and he shall prescribe, in consultation with the commissioner, such rules and regulations as may be necessary and proper to effectuate the purposes of this section.
The amount of any payment of interest or purchase price pursuant to this section shall be deducted from the appropriation or apportionment of State aid, other than any State aid which may be otherwise restricted pursuant to the provisions of P.L. 2007, c. 260(C.18A:7F-43 et al.), payable to the district, county or municipality and shall not obligate the State to make, nor entitle the district, county or municipality to receive, any additional appropriation or apportionment. Any amount so deducted shall be applied by the State Treasurer to satisfy the obligation of the district, county or municipality arising as a result of the payment of interest or purchase price pursuant to this section.
N.J.S. § 18A:56-16