34 C.F.R. §300.503.  Prior notice by the public agency; content of notice.

(c) Notice in understandable language.

(1) The notice required under paragraph (a) of this section must be--

(i) Written in language understandable to the general public; and
(ii) Provided in the native language of the parent or other mode of communication used by the parent, unless it is clearly not feasible to do so.