34 C.F.R. § 682.203 – Responsible parties.

(a) Delegation of functions. A school, lender, or guaranty agency may contract or otherwise delegate the performance of its functions under the Act and this part to a servicing agency or other party. This contracting or other delegation of functions does not relieve the school, lender, or guaranty agency of its duty to comply with the requirements of the Act and this part.
(b) Trustee responsibility. A lender that holds a loan in its capacity as a trustee assumes responsibility for complying with all statutory and regulatory requirements imposed on any other holders of a loan.
(Authority: 20 U.S.C. 1082)