(a) The Diné College must use financial assistance under this subpart only for operation and maintenance, including educations programs, annual capital expenditures, major capital improvements, mandatory payments, supplemental student services, and improvement and expansion, as described in 25 U.S.C. 640c-1(b)(1);

(b) The Diné College must not use financial assistance under this subpart for religious worship or sectarian instruction. However, this subpart does not prohibit instruction about religions, cultures or Indian Tribal languages.