CASLI vs NIC - which certification actually matters more for finding interpreting work?
I'm a working interpreter with 4 years of experience, primarily educational K-12, and I'm trying to figure out which certification to pursue first — the CASLI CDI or the NIC. I hold the Educational Interpreter Performance Assessment credential at a 4.5 rating, which gets me through the door in school settings, but I want to expand into community and medical interpreting where requirements vary so much by employer that I can't figure out which cert opens more doors.
From what I understand, the CDI is specifically for Deaf interpreters, and the NIC is the general interpreter certification from RID. I'm hearing and a native ASL user — grew up in a Deaf family — so I'm eligible for the NIC. I might be confusing what CASLI certifies versus what RID certifies. Can someone clarify the organizational structure here?
For the NIC: the written exam is 100 questions plus a performance evaluation. I've heard the written is the easier part and the performance assessment is where most candidates struggle — specifically the consecutive interpreting sample. My consecutive is weaker than my simultaneous because K-12 settings move fast and I don't use it as often.
How long did people study for the NIC written specifically, and did written prep actually improve performance eval skills, or are those really two separate types of preparation?
For community and medical settings, the NIC is universally recognized. If employers ask about CASLI, they're usually asking about the generalist or specialist performance assessments for educational settings. The NIC is what you want for the broader market and it's what most agencies list as preferred or required.
Written prep and performance prep are almost entirely separate skill sets. The written tests your knowledge of the RID Code of Professional Conduct, interpreting theory, and Deaf culture history. The performance assessment tests actual interpreting ability under pressure. Get the written done first, then spend 6+ months specifically working consecutive with a mentor before scheduling the performance.
You've got the org structure right — CASLI handles the CDI for Deaf interpreters and some other assessments, while RID handles the NIC for hearing interpreters. As a hearing native ASL user, you'd pursue the NIC through RID. CASLI and RID are separate organizations that collaborate on some standards but administer different credentials.
The NIC written is genuinely not the hard part. I passed it on first try with about 3 weeks of review, scoring in the 80th percentile. The performance evaluation is where careers go to die — I know excellent interpreters who've passed the written twice and still haven't cleared the performance portion. Budget at least 6-9 months of performance prep before you schedule that component.
I've been in a similar spot and honestly the thing that shifted my prep was stopping trying to memorize the right answer and actually digging into why the wrong ones are wrong. Like, if you miss a teaming question, don't just mark it and move on — figure out what reasoning led you astray. I spent a lot of time on casli/questions/teaming co interpreting because that's a section where the distractors are really well-crafted and they'll get you if you're not thinking critically.
On your actual question, the CDI opened more doors for me in educational settings than the NIC did, at least in my region. Your 4.5 EIPA is solid but some districts want to see the CDI as proof you've been evaluated specifically as a Deaf interpreter. That said, your four years of experience means you're not starting from scratch on either exam, so don't let the prep process feel as daunting as it looks from the outside.