25 C.F.R. § 37.111
What role does a tribe have in issues relating to school boundaries?
A tribal governing body may:
(a) Establish and revise geographical attendance boundaries for all but ORB schools;
(b) Authorize ISEP-eligible students, residing within the tribe's jurisdiction, to receive transportation funding to attend schools outside the geographic attendance area in which the student lives; and
(c) Authorize tribal member students who are ISEP-eligible and are not residing within the tribe's jurisdiction to receive transportation funding to attend schools outside the student's geographic attendance area.