Does My Child Need Speech Therapy? A Free 2-Minute Screening

The short answer

Your child likely needs a speech-language evaluation — the step that comes before therapy — if they are missing the milestones for their age band: no babbling or gestures by 12 months, no single words by 18 months, no two-word phrases by age 2, speech that strangers mostly can’t follow at age 3, or losing words or skills at any age. If none of those apply and your child keeps gaining new words and sounds month over month, they are probably on track — and the best move is simply to keep practicing and re-check at the next age band.^4,7

These aren’t arbitrary cutoffs. The CDC’s milestone checklists were revised in 2022 specifically so that a missed milestone means something: each item is now set at the age when most children (75% or more) have the skill, precisely to discourage a “wait-and-see” approach.^4,2

Needing help is common, and it clusters exactly where parents worry most: prevalence is highest among children ages 3–6, at 10.8%. Asking “does my child need speech therapy?” at this age is a normal, sensible parenting question — not an overreaction.⁸

Take the free 2-minute screening

The quickest way to turn a vague worry into a clear answer is a structured set of questions. Our delay quiz asks about your child’s age, how many words they use, how they combine them, how much of their speech unfamiliar adults understand, and whether they’ve lost any skills — the same signal areas the red-flag table below covers, matched to your child’s exact age band.

Every result routes somewhere — no dead-end score screens. If the screening flags red flags for your child’s age, your result points you to a free consultation and the free public evaluation paths described below. If it lands in the borderline zone, you’ll get the specific milestones to watch and a reminder to re-screen. And if your child looks on track, the result starts you on practice — the thing that helps at every level of concern.

Red flags by age: the 2022 CDC milestones, inverted

The CDC’s “Learn the Signs. Act Early.” checklists describe what most children do by each age. Flip them around and you get the red flags — the signs that an evaluation is worth pursuing at each age band.^1,2

One item alone, in a child who is otherwise gaining skills, is a watch-and-re-check situation. A missed red flag for their age band — or several concerns stacking up — is a reason to move to an evaluation. For the full referral-timing guide, including stuttering and lisp-specific signs, see our companion page When to See a Speech Therapist.⁴

Why these ages differ from older checklists you may have seen

If these ages look later than a list you read elsewhere, that’s not sloppiness — it’s the 2022 revision. The CDC and AAP rebuilt the checklists around a clear standard: each milestone is placed at the age by which most children (≥75%) are expected to have the skill, so a miss is a genuine prompt to act rather than a coin flip. The revision cut 26.4% of the old milestones, replaced 40.9%, and of the milestones moved to a different age, 67.7% were moved older.⁴

That makes these red flags deliberately conservative. Under the old, stricter lists, half of children could “fail” an item and still be fine; under the 2022 lists, a missed milestone is uncommon enough to mean something. Practical translation: if your child misses a red flag above, don’t wait for the next birthday to check again.^4,2

Speech sounds run on a separate clock from words and sentences, and are usually reported against a stricter bar — for example, the largest U.S. review places each consonant at the age when 90% of children produce it correctly, with the full set arriving between ages 2 and 7. Different criteria are the main reason age lists disagree across the internet, not different children.¹²

How much should strangers understand?

Intelligibility — how much of your child’s speech an unfamiliar adult understands — is one of the most useful single screening signals, because it integrates everything: sounds, words, and sentence-building. The CDC’s 3-year checklist puts it plainly: by age 3, a child should talk well enough for strangers to understand most of the time.^4,7

You may also have heard the old rule that a 4-year-old should be 100% intelligible. That figure traces to a 1988 screening study — and current evidence contradicts it. A 2021 normative study of 538 typically developing children, scored by 1,076 unfamiliar adult listeners, found that intelligibility keeps growing for years: 90% single-word intelligibility wasn’t reached until 83–120+ months (roughly ages 7–10) across the percentile range.^11,9

The same research group found that among typically developing children aged 30–47 months, only a small number even approach 100% intelligibility — clarity keeps developing well past the fourth year. So don’t panic over a 4-year-old who isn’t crystal clear; do act on a 4-year-old whom strangers understand less than half the time.^10,9

A screening is not an evaluation (and a quiz is not a diagnosis)

It helps to know which step you’re on. A screening — a milestone checklist, a pediatrician’s questionnaire, or our quiz — is a brief check that sorts children into “looks on track” and “should be looked at properly.” It cannot diagnose anything. Developmental screening is recommended as a routine part of well-child care for exactly this sorting purpose.⁴

An evaluation is the real assessment: a certified speech-language pathologist observes and tests your child’s speech and language directly, determines whether a disorder is present, and recommends what to do. That’s the step that can end in a diagnosis and a therapy plan — and it’s what our screening routes you toward when red flags appear. (What a formal evaluation involves, step by step, is covered in our Speech Assessment guide.)⁵

Formal assessment matters because parent instinct, while valuable, is hard to calibrate: published estimates of how many 4- to 6-year-olds have a speech sound disorder range from 2.1% to 23%, depending on the criteria and assessments used. Structured questions beat gut feel — and a professional evaluation beats both.⁵

One more calibration point for multilingual families: using multiple languages does not confuse children or cause speech or language delays. A genuine communication issue shows up in all the languages a child uses — so screen against the same age milestones, counting words across every language together.⁶

If the screening flags red flags: your next 2 weeks

A flagged screening is a prompt to act, not a verdict. The CDC’s guidance for concerned parents is explicit: don’t wait — acting early makes a real difference, and you can start the process yourself.⁴

1. 1Talk to your pediatrician and ask for a developmental screening — bring the specific red flags you checked, with your child’s age band.
2. 2Younger children (U.S.): ask your pediatrician about your state’s early-intervention evaluation pathway.
3. 3Age 3 and up (U.S.): contact your local public school district’s special-education office — evaluations are free there too.
4. 4Prefer to go private, or outside the U.S.: a certified speech-language pathologist can evaluate directly; check whether your insurer requires a referral first.

While the evaluation is being scheduled, keep practicing at home — evaluation waits are real, and home practice is not wasted time. A Cochrane systematic review found speech and language therapy effective for children with phonological and expressive-vocabulary difficulties, with no significant differences between intervention delivered by clinicians and by trained parents.¹⁴

If the screening says on track (or borderline): start practice tonight

An on-track result doesn’t mean “do nothing” — it means the best thing you can do is regular, playful practice, plus a re-screen at the next age band (or in 3 months, if your result was borderline). The evidence on practice is unusually clear about one thing: frequency beats duration.¹³

In a randomized trial of 54 preschoolers with speech sound disorder, children who practiced 3 times per week for 8 weeks made significantly greater gains than children who got the same total amount of therapy once a week over 24 weeks — and the once-a-week group did not significantly outperform a storybook-reading control. Short and often is the schedule that works.¹³

Parents are also better at this than they’re given credit for. A meta-analysis of 18 studies found parent-implemented language interventions have a significant positive impact on children’s receptive and expressive language skills, and the Cochrane review above found trained parents matched clinician-delivered results.^15,14

A word of honesty about apps, ours included: when researchers appraised 132 mobile apps for childhood speech disorders, none rated excellent quality and only 25 rated good. Apps are a delivery mechanism for the thing the evidence supports — frequent, structured, parent-supported practice — not a substitute for professional care. That’s exactly the job SpeechStep is built for: short daily sessions with AI feedback on every attempt, progress you can watch, and a clear handoff to a professional whenever red flags appear.¹⁶

Frequently asked questions

References

16 sources from authoritative bodies. Last reviewed August 2026.

1. 1.CDCCDC’s Developmental Milestones (Learn the Signs. Act Early.) — Milestone checklist index, 2022.
2. 2.CDCKey Points about CDC’s Developmental Milestone Checklists — Milestone explainer, 2022.
3. 3.CDCMilestones by 4 Years — Milestone checklist, 2022.
4. 4.Pediatrics (AAP)Zubler et al. — Evidence-Informed Milestones for Developmental Surveillance Tools — Methodology paper for the 2022 CDC milestone revision, 2022.
5. 5.ASHASpeech Sound Disorders: Articulation and Phonology — Practice Portal page.
6. 6.CHSA (ASHA consumer site)Learning More Than One Language — Consumer page, 2026.
7. 7.NIDCDSpeech and Language Developmental Milestones — Fact sheet.
8. 8.NIDCDQuick Statistics About Voice, Speech, Language — Statistics fact page.
9. 9.JSLHR (ASHA)Hustad et al. — Speech Development Between 30 and 119 Months in Typical Children I: Intelligibility Growth Curves for Single-Word and Multiword Productions — Normative growth-curve study, 2021.
10. 10.JSLHR (ASHA)Hustad et al. — Development of Speech Intelligibility Between 30 and 47 Months in Typically Developing Children — Cross-sectional growth study, 2020.
11. 11.Pediatrics (AAP)Coplan & Gleason — Unclear Speech: Recognition and Significance of Unintelligible Speech in Preschool Children — Classic norms and screening study, 1988.
12. 12.AJSLP (ASHA)Crowe & McLeod — Children’s English Consonant Acquisition in the United States: A Review — Systematic review, 2020.
13. 13.JSLHR (ASHA)Allen — Intervention Efficacy and Intensity for Children With Speech Sound Disorder — Randomized controlled trial (dose frequency), 2013.
14. 14.Cochrane Database of Systematic ReviewsLaw, Garrett & Nye — Speech and Language Therapy Interventions for Children With Primary Speech and Language Delay or Disorder — Cochrane systematic review, 2003.
15. 15.AJSLP (ASHA)Roberts & Kaiser — The Effectiveness of Parent-Implemented Language Interventions: A Meta-Analysis — Meta-analysis, 2011.
16. 16.PLoS ONEFurlong et al. — Mobile Apps for Treatment of Speech Disorders in Children: An Evidence-Based Analysis of Quality and Efficacy — App-quality appraisal, 2018.