(a) Procedures and materials for assessment and placement of students who are deaf or hard of hearing shall be selected and administered so as not to be racially, culturally, or sexually discriminatory.
(b) A single assessment instrument may not be the sole criterion for determining the placement of a student.
(c) The procedures and materials for the assessment and placement of a student who is deaf or hard of hearing shall be in the student's preferred mode of communication. All other procedures and materials used with any student who is deaf or hard of hearing and who is an emergent bilingual student as defined by Section 29.052 shall be in the student's preferred mode of communication.
(d) In recognizing the need for development of language and communication abilities in students who are deaf or hard of hearing but also calling for the use of methods of communication that will meet the needs of each individual student, each student who is deaf or hard of hearing must be thoroughly assessed to ascertain the student's potential for communicating through a variety of means.