Sec. 300.29 (a)

(a) Native language, when used with respect to an individual who is limited English proficient, means the following:

(1) The language normally used by that individual, or, in the case of a child, the language normally used by the parents of the child, except as provided in paragraph (a)(2) of this section.
(2) In all direct contact with a child (including evaluation of the child), the language normally used by the child in the home or learning environment.