(a) Promissory notes evidencing student loans made by the board with proceeds from bonds may be deposited and held in any fund as directed by the board resolution that authorized the issuance of the bonds.
(b) The board may pledge and grant a security interest in all or any portion of those promissory notes to any person to further secure the payment of principal and interest on bonds issued under this chapter or of obligations under any contracts entered into by the board relating to the issuance of a series of bonds.