Miss. Code § 37-47-61
For the purpose of providing for the payment of the principal of and interest upon bonds issued under the provisions of this chapter according to the terms thereof, there shall be and there is hereby established in the state treasury a sinking fund for such payment. Said sinking fund shall consist of the premiums and accrued interest paid upon any such bonds so issued and of such other amount as shall be paid into such fund by appropriation or other authorization by the legislature. In cases where the loan or advance to a school district was made from the proceeds of bonds issued under the provisions of this chapter, the state educational finance commission shall annually pay into said sinking fund the amounts of annual grants to which any school district is entitled and which are used for the repayment of the principal of and interest upon a loan or grant made to such school district under the authority of Section 37-47-25. However, where the loan or advance was made from accumulations in the state public school building fund the amounts of the annual grants to which the school districts are entitled which are used for the repayment of principal of and interest upon such loan or grant shall be paid into the state public school building fund and not into the bond and interest sinking fund.
Miss. Code § 37-47-61