(B) Basis of knowledge.--A local educational agency shall be deemed to have knowledge that a child is a child with a disability if, before the behavior that precipitated the disciplinary action occurred--
(i) the parent of the child has expressed concern in writing to supervisory or administrative personnel of the appropriate educational agency, or a teacher of the child, that the child is in need of special education and related services;
(ii) the parent of the child has requested an evaluation of the child pursuant to section 614(a)(1)(B); or
(iii) the teacher of the child, or other personnel of the local educational agency, has expressed specific concerns about a pattern of behavior demonstrated by the child, directly to the director of special education of such agency or to other supervisory personnel of the agency.
