Informal Assessment Tool from The Speech Source

A smarter way to assess speech sounds and explain it to families

A browser-based informal speech sound disorder assessment tool for pediatric SLPs. Calculate PCC in real time, document consonant errors by developmental age, identify phonological processes, and hand parents a clear summary before they leave the room.

Get instant access $39

Single-user license. Opens in any browser. No install needed.

Informal clinical tool

Live PCC calculation

Consonant inventory by age

Phonological processes

Instant parent PDF

The tool

Structured data collection, without the formality

This is a browser-based informal speech sound disorder assessment tool built for real pediatric sessions. It gives you a consistent, structured way to measure speech sound accuracy, document specific consonant errors, and identify phonological patterns — then generates a parent-friendly summary before the session ends. It is not a standardized assessment. It is the tool you reach for when you need real data, in real time, with a real kid.

Three ways SLPs use this tool

01Alongside a standardized articulation assessment like the Goldman Fristoe or GFTA-3, to add a play-based conversational sample or give families a more accessible picture of results.

02During speech sound therapy to track PCC progress across sessions with consistent data collection and give families a tangible look at how things are changing.

03As a structured informal screen before deciding whether a full standardized evaluation is warranted.

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2 play-based speaking samples

A structured play activity and naturalistic conversation — each 2-3 minutes, each with its own correct and incorrect consonant tally. PCC calculates per sample automatically.

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Live PCC calculation

Tap the correct and incorrect consonant counters as you listen. Overall PCC and a live severity bar update in real time — no math, no clipboard.

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Full consonant inventory

Organized by developmental age — early developing sounds (by age 3) and later developing (ages 3-6). Mark each as deletion, substitution, or distortion and write in exactly what the child said.

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Phonological processes

Check the processes observed — Fronting, Backing, Stopping, Gliding, Cluster Reduction, Final Consonant Deletion, and more. Each includes a parent-friendly definition in the PDF.

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Motor planning checklist

An observational checklist for motor planning characteristics — inconsistent errors, groping, vowel errors, and syllable segregation — with a notes field.

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Instant parent summary PDF

One click generates a personalized, multi-page results PDF with PCC score, severity, consonant errors, phonological patterns, and a recommendation — branded with your practice name.

About PCC

What is Percent Consonants Correct?

PCC measures how accurately a child produces consonant sounds in conversational speech. It is calculated by dividing the number of correctly produced consonants by the total consonants attempted across a 2-3 minute naturalistic speaking sample.

Correct consonants ÷ Total consonants attempted × 100 Based on Shriberg and Kwiatkowski (1982) — a foundational framework in pediatric speech-language pathology

PCC gives you a consistent, objective way to describe severity and track change over time. This tool calculates it automatically as you tally — so you can stay focused on the child, not the math.

PCC score	Severity	What it means
Greater than 85%	Mild	Most consonants correct. Speech is generally easy to understand.
65% to 85%	Mild-Moderate	Several sounds affected. May sometimes impact how well others understand.
50% to 65%	Moderate-Severe	Many sounds affected. Intelligibility is significantly impacted.
Below 50%	Severe	Most consonants affected. Significant impact on being understood.

In session

From first tally to parent summary in one session

Set up your practice once, 2 minutes

Enter your practice name and clinician credentials on the setup screen. It saves automatically — your name appears on every PDF you generate from that point forward.

Tally during the speaking sample

Work through two 2-3 minute speaking samples — a structured play activity and a naturalistic conversation. Tap the correct and incorrect consonant counters as you listen. PCC per sample and overall calculates automatically.

Document specific errors and patterns

Work through the consonant inventory organized by developmental age. Mark whether each sound was deleted, substituted, or distorted — and write in exactly what the child said. Check off phonological processes and any motor planning characteristics observed.

Download and share before they leave one click

Generate a personalized parent summary PDF with the PCC score, severity classification, consonant errors with parent-friendly explanations, phonological process cards, and a recommendation — all branded with your practice name.

What you get

Everything included for $39

One-time payment. Single-user license. Use it in as many sessions as you want, forever.

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Browser-based assessment toolWorks on any device. No install or login required.

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2 speaking sample talliesPlay activity and conversation, each with live PCC.

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Full consonant inventoryEarly and later developing sounds with error type and write-in field.

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Phonological processes checklist10 processes, each with a parent-friendly definition for the PDF.

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Motor planning checklist6 characteristics with observational notes field.

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Live PCC severity scoringVisual severity bar with plain-language parent explanation.

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3 recommendation optionsEvaluation recommended, no evaluation, or follow up in 3 months.

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Parent summary PDFMulti-page, personalized with child name, scores, and your practice info.

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Practice name customizationYour name on every PDF via a one-time setup screen.

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Unlimited sessionsSingle-user license covers all your own clients, forever.

Who it's for

Built for SLPs who work with kids

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Private practice SLPs

Consistent PCC data across sessions and a parent PDF that makes every consultation clearer and more professional.

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School-based SLPs

Structured informal data for eligibility reports, progress monitoring, and IEP meetings — collected during natural interaction.

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Telepractice SLPs

Works entirely in the browser. Share your screen during session and email the parent PDF when you are done.

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Preschool screeners

Pairs perfectly with the Speech Source Screening Kit for a complete play-based speech sound screening workflow.

Pricing

Simple, one-time pricing

Individual SLP license

Informal Speech Sound Assessment Tool

^$39

One-time payment. No subscription. Use it forever.

✓Full browser-based assessment tool

✓2 speaking sample tallies with live PCC

✓Consonant inventory by developmental age

✓Phonological processes + motor planning checklists

✓Instant parent summary PDF — branded with your practice

✓Works on any device — iPad, laptop, phone

✓Unlimited sessions with your own clients

Get instant access

You will receive your tool link and access instructions immediately after purchase.

Better together

Get all 3 assessment tools for $97

Includes the Speech Sound, Fluency & Stuttering, and Early Language tools. Save $20 compared to buying separately.

$117 separately

$97

Save $20 · All 3 tools

Get the bundle →

Questions? thespeechsource@gmail.com

Questions

Things people ask us

Is this a standardized assessment?

No, and that is intentional. This is an informal clinical tool designed to complement your formal standardized assessments, not replace them. PCC severity ranges are based on Shriberg and Kwiatkowski (1982). Always use your clinical judgment alongside the results.

How is this different from the Goldman Fristoe or GFTA-3?

Standardized tools give you norm-referenced scores from specific picture-naming tasks. This tool captures PCC from naturalistic play-based conversational speech, which gives you a different and complementary data point. Many SLPs use both.

What age range is this appropriate for?

The consonant inventory is organized by developmental norms — early developing sounds (by age 3) through later developing sounds (ages 3–6). Most appropriate for children ages 2 through early school age.

Does it work on an iPad or tablet?

Yes. It works in any modern browser on any device. Tapping the correct and incorrect counters during a session is especially easy on a tablet or iPad.

Can I use this for more than one child?

Absolutely. Use the Reset button between sessions to clear the data. Your practice info stays saved. One license covers unlimited sessions with your own clients.

Do I need to download or install anything?

Nothing at all. The tool opens in your browser from a link. Bookmark it and it is ready any time. The parent PDF downloads directly in your browser with one click.

How do I get access after purchasing?

You will receive an email immediately after checkout with your tool link and access instructions. Bookmark the link and open it for any session going forward.