(a) Notice. Written notice that meets the requirements of paragraph (b) of this section must be given to the parents of a child with a disability a reasonable time before the public agency--
(1) Proposes to initiate or change the identification, evaluation, or educational placement of the child or the provision of FAPE to the child; or
(2) Refuses to initiate or change the identification, evaluation, or educational placement of the child or the provision of FAPE to the child.
