AAC Evaluation: What Happens and How to Prepare

Reviewed by a licensed speech-language pathologist

Quick answer: An AAC evaluation is a structured assessment that matches a child who has trouble speaking with communication tools that fit their abilities and daily life. A speech-language pathologist leads it, often with a small team, and the process may involve trying several options before a recommendation is made.

When a child struggles to speak in a way others can understand, families often hear the term AAC, short for augmentative and alternative communication. That covers everything from gestures and picture boards to tablet apps and speech-generating devices. Before any of those tools is chosen, there is usually an aac evaluation. Knowing what that visit involves takes a lot of the mystery, and some of the worry, out of it.

What is an AAC evaluation?

An AAC evaluation is an assessment designed to figure out how a child communicates now and what tools could help them do it better. It is not a test a child passes or fails. The goal is to find a good match between the child and a communication method. The American Speech-Language-Hearing Association describes AAC as any method that supports or replaces spoken communication, and the evaluation is the step that decides which methods make sense for one particular child.

The team looks at how the child understands language, how they try to express themselves, what motivates them to communicate, and what their body can do with their hands, eyes, and posture. All of that shapes the recommendation.

Who is on the evaluation team?

A speech-language pathologist usually leads the evaluation. Because a communication tool has to fit the child’s whole life, other people often join. An occupational or physical therapist may assess how the child will physically access a device, whether by touch, switch, or eye gaze. Teachers and caregivers add what they see day to day. The family is a central part of the team, not an audience, since they know when and why the child most wants to communicate.

The National Institute on Deafness and Other Communication Disorders notes that assistive communication devices range widely, so having several viewpoints helps the team avoid recommending a tool that looks good on paper but does not work in a kitchen or a classroom.

What happens during the evaluation?

Most evaluations start with a conversation. The clinician asks about the child’s history, current communication, and the family’s hopes. Then comes hands-on assessment and, often, trials of actual tools. The child might try a simple picture board, then a tablet with a communication app, then a dedicated speech-generating device. The clinician watches how quickly the child takes to each one and how well it fits their reach and vision.

Feature matching is the heart of it. The team lines up what the child needs against what each tool offers: vocabulary size, how symbols are arranged, how the device is accessed, how loud it is, and how durable it needs to be. A single session may be enough, or the process may run across several visits with a longer trial period at home or school before anyone commits.

Low-tech and high-tech options both count

Families sometimes assume AAC means an expensive device, but that is only part of the picture. Low-tech AAC includes gestures, sign, and printed symbol boards that need no battery. High-tech AAC includes speech-generating devices and apps that run on tablets. Understood.org points out that many children use a mix, reaching for a quick picture card in one setting and a full device in another. The evaluation often recommends more than one tool for exactly this reason.

How do families prepare for the visit?

A little preparation makes the evaluation more useful. Write down the words, phrases, and topics your child most wants to communicate, from snack requests to favorite characters. Note how they currently get their point across, including sounds, gestures, and pointing. Bring a list of the routines where communication breaks down most, since those are the moments a tool needs to serve.

It also helps to think about the environments where the child spends time, because a device has to travel with them. If any speaking or listening happens at home between sessions, keeping it playful matters. Voice-first practice tools such as the Little Words app offer low-pressure, play-based speaking practice a parent can start on a tablet at home, which can sit alongside whatever the evaluation recommends. Home practice like this is a supplement to therapy, not a replacement for it, and it works best when it stays short and light rather than becoming a chore.

What comes after the evaluation?

The evaluation produces a written report with a recommendation. If a speech-generating device is suggested, that report supports funding requests. Medicaid and many insurers treat speech-generating devices as durable medical equipment, and coverage often depends on the documented need the report describes. The Centers for Disease Control and Prevention encourages families to act early on communication concerns, and the same logic applies here: the sooner a child has a reliable way to be understood, the sooner the frustration eases for everyone.

After a tool arrives, the work shifts to teaching the child and the family to use it. That is where regular therapy, coaching, and daily use come together, and it is normal for the plan to be adjusted as the child grows.

Key takeaways

• An AAC evaluation matches a child with communication tools; it is not a test to pass or fail.
• A speech-language pathologist usually leads a small team, and the family is part of it.
• The process often includes trials of low-tech and high-tech tools, sometimes across several visits.
• Using AAC does not stop speech from developing and often supports it.
• The written report supports insurance or Medicaid funding for a speech-generating device.

Frequently asked questions

How long does an AAC evaluation take?

It varies. Some finish in one long session, while others span several visits with a device trial period that can add weeks before a final recommendation.

Will using AAC stop my child from talking?

No. AAC does not hold back speech, and for many children it supports spoken language by giving them a dependable way to communicate while speech develops.

Who is on an AAC evaluation team?

A speech-language pathologist usually leads, often joined by an occupational or physical therapist, teachers, and the family so the tool fits the child’s body and daily life.

Does insurance or Medicaid cover a speech-generating device?

Often yes. These devices are frequently covered as durable medical equipment when the evaluation documents the need, though rules and paperwork vary by plan and state.

What is the difference between low-tech and high-tech AAC?

Low-tech AAC includes picture boards, gestures, and printed symbols with no power needed. High-tech AAC includes speech-generating devices and apps. Many children use both.

Sources

• American Speech-Language-Hearing Association: Augmentative and Alternative Communication (AAC) (asha.org)
• National Institute on Deafness and Other Communication Disorders: Assistive Devices for Communication (nidcd.nih.gov)
• Medicaid.gov: Coverage of Durable Medical Equipment (medicaid.gov)
• Understood.org: AAC Basics for Families (understood.org)
• Centers for Disease Control and Prevention: Developmental Milestones (cdc.gov)