Related Organizations Texas Board for Evaluation of Interpreters (BEI): http://www.dars.state.tx.us/dhhs/bei.shtml This is the state agency which administers the certification exams for sign language interpreters. Registry of Interpreters for the Deaf (RID): www.rid.org This is the national professional organization for sign language interpreters. They also provide a national certification test. Texas Society of Interpreters for the Deaf (TSID): www.tsid.org This is the professional organization for sign language interpreters in Texas. The Deaf and Hard of Hearing Center: www.deaf-hh.org This is the local agency that provides a variety of services (including interpreting services) to persons who are d/Deaf or hard of hearing in the Coastal Bend area.