The Registry of Interpreters for the Deaf, (RID) has been awarding certifications to interpreters who pass national tests since the early 1970’s. The certification tests assess language knowledge, communication skills, ethics, culture, and professionalism.
MCSC Master Comprehensive Skills Certificate: Awarded to an interpreter/transliterator who has held a CSC for at least four years and has met the standards of a CSC at a higher competency rate.
SC:L Specialist Certificate: Legal: Awarded to an interpreter/transliterator who possesses a CSC plus specialized skills to qualify at standards established for interpreting/transliterating in a variety of legal settings with comprehension of English and signed legal terminology.
CSC Comprehensive Skills Certificate: Ability to interpret/transliterate using either English or American Sign Language in the situation, selecting the preferred communication mode of the deaf or hard of hearing person.
CDI Certified Deaf Interpreter: Ability to interpret between American Sign Language and English–based sign language or transliterate between spoken English and a signed code for English. Holders of this certification are interpreters who are deaf or hard of hearing.
CI Certificate of Interpretation: Ability to interpret between American Sign Language (ASL) and spoken English in both sign–to–voice and voice–to–sign.
CT Certificate of Transliteration: Ability to transliterate between English-based sign language and spoken English in both sign–to–voice and voice–to–sign.
IC Interpretation Certificate: Ability to interpret between American Sign Language and spoken English.
TC Transliteration Certificate: Ability to transliterate between spoken English and a signed code for English.
OIC Oral Interpreting Certificate: Ability to transliterate a spoken message from a person who hears to a person who is deaf or hard of hearing and the ability to understand and repeat the message and intent of the speech and mouth movements of the person who is deaf or hard of hearing.
OIC:C Oral Interpreting Certificate:Comprehensive: Ability to paraphrase/transliterate a spoken message with or without voice and with natural lip movement for the deaf or hard of hearing person. Also has the ability to voice the message of the deaf or hard of hearing person for the benefit of the third person.