19 T.A.C. §89.1131. Qualifications of Special Education, Related Service, and Paraprofessional Personnel.

(d)  Interpreting services for students who are deaf shall be provided by an interpreter who is certified in the appropriate language mode(s), if certification in such mode(s) is available. If certification is available, the interpreter must be certified by the Registry of Interpreters for the Deaf or the Texas Commission for the Deaf and Hard of Hearing, unless the interpreter has been granted an emergency permit by the commissioner of education to provide interpreting services for students who are deaf. The commissioner shall consider applications for the issuance of an emergency permit to provide interpreting services for students who are deaf on a case-by-case basis in accordance with requirements set forth in 34 CFR, §300.136, and standards and procedures established by the TEA. In no event will an emergency permit allow an uncertified interpreter to provide interpreting services for more than a total of three school years to students who are deaf.