How to Prepare for a Sign Language Proficiency Interview

The short answer

A Sign Language Proficiency Interview (often shortened to SLPI) is a conversation-based assessment of how well you communicate in a signed language. In the US, that language is usually American Sign Language (ASL). There is no written answer key to memorize. The interview assesses how you sign during a real conversation, so the best preparation is regular conversational practice with fluent signers. If the interview takes place over video, you also need to make sure the interviewer can clearly see your hands, face and signing space.

Schools, employers and agencies each run the interview under their own procedures, so the details can differ. Length, format, whether the session is recorded, how it is rated and the level you need may all vary by program. No program-specific details were available for this guide. Your program's coordinator is the authoritative source for these rules, and you should confirm them before you start preparing.

What a conversational proficiency interview looks for

Conversational proficiency interviews generally look at how you use the language naturally. That includes how well you understand the interviewer, how fully you respond, and whether you can expand on a topic, explain and give examples. Interviewers also notice your vocabulary range, grammar, use of facial expressions and signing space, and overall fluency. Conversation topics tend to be familiar ones, such as your work or studies, background, daily life and interests. That way the interview measures your language skills rather than specialist knowledge.

Building your signing skills beforehand

• Hold regular conversations with fluent signers, ideally Deaf signers, about everyday topics.
• Practice talking about yourself at length: your background, job or studies, routine, hobbies and plans. Aim for full explanations rather than one-line answers.
• Work on comprehension as well as expression. Practice following other people's signing, including fingerspelling and numbers.
• Practice repair strategies in sign: asking for repetition, checking your understanding, rephrasing, and fingerspelling or describing a concept when you don't know a sign.
• Record yourself signing and review the recording. Check your handshapes, facial expressions and grammatical markers (non-manual markers), and how you use the space around you.
• Sign at your natural level instead of rehearsing scripts. Memorized answers rarely hold up once the conversation moves in an unexpected direction.

Setting up for a remote video interview

If your interview is held over a video call, the interviewer can only assess what reaches their screen. A poor setup won't lower your actual skill, but it can hide it. Hands might leave the frame, fingerspelling might blur, or facial expressions might fall into shadow. Check the items below before the day.

Camera position and framing

• Frame yourself from just above your head to around your waist, with room on both sides for your arms and signing space.
• Place the camera at roughly eye level and far enough away that your hands stay in view when you sign to the sides or above your shoulders.
• Use a stable mount or surface instead of holding the device.
• On a phone or tablet, check whether landscape or portrait orientation gives a better view of your full signing space, and lock the orientation.
• Turn off auto-framing or tracking features if they zoom or pan while you sign. They can crop your hands unpredictably.

Lighting

• Light your face and hands from the front or slightly to the side.
• Avoid sitting with a bright window or lamp behind you. Backlighting turns you into a silhouette and hides facial expressions.
• Aim for even light without harsh shadows across your face or hands.

Background and clothing

A plain, uncluttered physical background that contrasts with your skin tone makes your hands easier to follow. A solid-colored top that contrasts with your hands helps for the same reason. Avoid busy patterns and jewelry or accessories that catch the eye or make noise.

Virtual backgrounds and background blur work differently from a real backdrop. They are software effects that try to separate you from your surroundings in real time. Quick hand movements and fingers can get clipped, smeared or partly erased in the process. Unless your program says otherwise, turn these effects off and use a real plain background instead. Also turn off beauty or appearance filters, since they can soften facial detail.

Connection and video quality

Signed conversation depends on motion, so a choppy or heavily compressed video stream can blur fingerspelling and fast signs. Use the most stable connection you have, and use a wired connection if one is available. Pause downloads, streaming and other bandwidth-heavy activity. Close other apps that might be using the camera.

Microphone and audio

Audio may play only a small role in a signed interview, but it can still matter for joining the call, for a coordinator who speaks, or for an interpreter if one is involved. Ask your program whether you should keep your microphone on or muted. A muted microphone avoids sending background noise.

Testing your setup step by step

Several checks can each pass separately, so test them one at a time. Each check confirms something different.

Check | How to verify it | What a pass actually confirms

Camera access | The browser or app has camera permission, and the correct camera is selected in the call platform's settings | The software is allowed to use the camera, but not that the image is usable

Video capture | The self-view preview shows a live, moving image | The camera is producing video

Framing and lighting | Sign several sentences and fingerspell a few words while recording yourself, then watch it back | Your hands, face and signing space are visible and clear on your own device

Call quality | Make a test call with someone who can read sign, and ask whether they can follow your fingerspelling | Your signing stays readable after passing through the network to the other side

Microphone (if needed) | The platform's input meter moves when you make sound, and your test-call partner confirms they hear you clearly | The microphone is detected and picking up sound, and only the partner's confirmation shows it is intelligible

If the camera doesn't appear or shows a black image, start with permissions. Check the site permissions in your browser and the camera privacy settings in your operating system. Next, close any other app that might be holding the camera. Then restart the browser or call app and test again.

On the day of the interview

• Join or arrive early enough to fix any last-minute camera or connection problems.
• Clear the space in front of you so nothing blocks your hands.
• Silence notifications on the device you're using and on any nearby devices.
• Have any identification or materials your program requires ready.
• If the video freezes or the picture becomes unclear during the interview, tell the interviewer right away instead of signing through it.

What to confirm with your program

No confirmed program-specific information was available for this guide, so some details are not covered here. Ask your program coordinator about:
• the interview length and format
• whether remote interviews are allowed and on which platform
• whether the session is recorded
• the rating scale and the level you need
• any fees and scheduling
• retake policies
• accommodations
These answers may change how you prepare.