Sec. 303.731 (a) (1)

(1) The Secretary makes payments to the Secretary of the Interior under part C of the Act, which the Secretary of the Interior must distribute to tribes or tribal organizations (as defined under section 4 of the Indian Self-Determination and Education Assistance Act, as amended, 25 U.S.C. 450b), or consortia of those entities, for the coordination of assistance in the provision of early intervention services by States to infants and toddlers with disabilities and their families on reservations served by elementary and secondary schools for Indian children operated or funded by the Secretary of the Interior.