The tribal governing body or school board of a school funded by the Bureau of Indian Affairs may waive, in part or in whole, the definition of adequate yearly progress established pursuant to paragraph (A) where such definition is determined by such body or school board to be inappropriate. If such definition is waived, the tribal governing body or school board shall, within 60 days thereafter, submit to the Secretary of Interior a proposal for an alternative definition of adequate yearly progress, consistent with section
of this title, that takes into account the unique circumstances and needs of such school or schools and the students served. The Secretary of the Interior, in consultation with the Secretary if the Secretary of Interior requests the consultation, shall approve such alternative definition unless the Secretary determines that the definition does not meet the requirements of section
of this title, taking into account the unique circumstances and needs of such school or schools and the students served.