The Secretary of the Interior shall develop and implement a plan for the coordination of services for all Indian children with disabilities residing on reservations covered under this chapter. Such plan shall provide for the coordination of services benefiting those children from whatever source, including tribes, the Indian Health Service, other BIA divisions, and other Federal agencies. In developing the plan, the Secretary of the Interior shall consult with all interested and involved parties. The plan shall be based on the needs of the children and the system best suited for meeting those needs, and may involve the establishment of cooperative agreements between the BIA, other Federal agencies, and other entities. The plan shall also be distributed upon request to States, State educational agencies and local educational agencies, and other agencies providing services to infants, toddlers, and children with disabilities, to tribes, and to other interested parties.