Sec. 300.300 (d) (2)

(2) In addition to the parental consent requirements described in paragraphs (a), (b), and (c) of this section, a State may require parental consent for other services and activities under this part if it ensures that each public agency in the State establishes and implements effective procedures to ensure that a parent’s refusal to consent does not result in a failure to provide the child with FAPE.