The signal that separates difference from disorder
Here is the short version. A student learning English will produce some English sounds differently, will use simpler grammar than their peers for a while, and may say very little at first. That is a language difference, the normal process of acquiring a second language. A speech sound disorder is something else: the child produces sounds in a way that is not typical for anyone in their language community, including other children who speak the same first language.
The single most useful question is this: do the difficulties show up in the child's first language too? If a family member or interpreter reports that the child is also hard to understand at home, or is behind same-age cousins in the home language, that points toward a disorder. If the child is fluent and age-appropriate at home and only sounds different in English, that points toward a difference.
You cannot answer that question alone, and you are not supposed to. You can ask it, gather classroom evidence, and bring the speech-language pathologist (SLP) and the English learner teacher into the conversation early. Our resources for English language learners and teacher resources are written for that handoff.
A speech sound disorder shows up in every language the child speaks. Difficulty only in English is a difference, not a disorder.
Why some English sounds are predictably hard
Every language uses a subset of the sounds the human mouth can make, and no two languages use the same subset. Sounds that do not exist in a child's first language are the ones most likely to come out as the nearest available neighbour. That is not a disorder. It is a mouth and an ear doing what you would expect.
The th sounds are the classic case. They are comparatively uncommon across the world's languages, so learners from many backgrounds substitute something close, often a t, d, s, or f sound. English r is another, since r is made in strikingly different ways across languages. Vowel distinctions, voiced and voiceless pairs like s and z, and consonant clusters are also frequent sticking points.
The pattern to look for is systematic and explainable. If a student substitutes the same sound the same way every time, and peers from a similar language background do something similar, you are almost certainly watching second-language acquisition. Errors that are inconsistent, unusual, or affect sounds common to virtually every language are more likely to be worth a look.
- Expected in a new English speaker: substituting for th, a different-sounding r, simplified consonant clusters, confusion between similar vowels, and stress or rhythm that sounds different from a peer's.
- More concerning, whatever the language background: difficulty with early sounds like p, b, m, n, w, h, t, and d well past the preschool years.
- More concerning: inconsistent errors, so the same word comes out differently each time, or visible struggle and frustration when producing words.
- More concerning: the child is hard for their own family to understand.
Read the home language survey, then go past it
Every district collects a home language survey at enrollment, and most teachers never look at it. Pull it. It tells you which languages are spoken at home and which the child heard first, which reframes everything you are hearing in class.
Then ask the family, through your district's interpreter if needed. You are asking about the home language, not about English. Families answer well when the framing is how the child talks at home rather than whether something is wrong.
- Which languages does your child hear and speak at home, and with whom?
- How easily do you understand your child in that language? What about a grandparent or neighbour who does not see them daily?
- How does your child compare with cousins or friends the same age who speak the same language?
- When did your child start talking, and in which language?
- Has anyone in the family or a previous school ever raised a concern about your child's speech, in either language?
- How long has your child been learning English, were they in school before this, and have they had a hearing test?
What a normal English learning path looks like in your room
Knowing the ordinary path prevents most unnecessary referrals. Many newcomers go through a quiet period, sometimes weeks and sometimes months, where they listen far more than they speak. Silence then is not a red flag by itself, as long as the student responds to gestures, follows routines, and engages with peers.
After that, comprehension runs ahead of production, so a student may follow a lesson well before saying much about it. Playground English arrives faster than the academic English a content class needs, which is why a student who chats confidently at recess can still struggle with a science text. That gap is normal, not evidence of a disorder.
What should not happen is stalling. If a student made steady gains and then stops progressing for a long stretch despite good instruction and support, gather the team, whatever the eventual answer turns out to be.
What to document before you raise it
The evidence that helps a bilingual evaluation is different. What the SLP needs from you is a picture across settings and languages, plus the child's history. Two weeks of notes is plenty.
Keep it factual. Write what the student said and what they meant, and note who could and could not understand them. If a bilingual staff member or family member can tell you how the student sounds in the home language, that observation outweighs everything else on the list.
- Dated examples in English: what was said, what was meant, in which activity.
- Any report about the home language, including who gave it and what they observed.
- Length of exposure to English and prior schooling, including gaps.
- Progress over time and setting differences: what the student could do in September compared with now, and partner work versus whole group.
- Hearing screening result and ear infection history, which matter here as much as anywhere.
One reliable observation of how the child sounds in their home language is worth more than a month of notes about English alone.
Why the SLP and the ESL teacher should look together
Neither specialist can answer this alone, and the failure modes run both ways. Evaluate an English learner with English-only tools and you can produce a picture of impairment that is really a picture of language exposure, which is how students get over-identified. Attribute everything to language learning and a real disorder goes untreated for years. Both are avoidable by putting the two people in the same room.
Ask for a joint look rather than a referral to one office. A short meeting with you, the SLP, and the English learner teacher, with the survey and your notes on the table, usually resolves the question or names the missing evidence. Bring the family in through an interpreter when the home language picture is unclear, because they hold the deciding information.
The team may assess in the home language or with an interpreter, compare the student with peers of similar background and length of exposure rather than monolingual classmates, and look for error patterns that second-language learning cannot account for. Requirements and resources vary by state and district, so ask how your building handles bilingual evaluations.
Two mistakes to avoid
The first is refusing to raise a concern because the student is an English learner. Being bilingual does not protect a child from a speech sound disorder, and waiting for English proficiency before evaluating is a delay with no clinical justification. If a student is hard to understand in both languages, or shows the signs above, start the conversation now and let the team sort out the method.
The second is referring for an accent. Sounding different is not a disorder and is not the school SLP's job. The question is always intelligibility and function in the child's own language community, never resemblance to a classmate's English. Framing it any other way sends a message about the home language that is hard to take back.
In between, keep teaching. Preview vocabulary, pair words with visuals, use partner rehearsal before whole-group sharing, and give every student more wait time. If you are unsure whether the concern is sounds or meaning, our speech versus language explainer sorts that out, and our post on when to refer a student covers documentation and wording.
Bringing it together
Ask one question first: does this show up in the child's first language too? Then read the home language survey, ask the family through an interpreter, write down what you hear across two weeks, and take it to the SLP and the English learner teacher together. Difference and disorder can look identical from the front of a classroom, and they stop looking identical once you add the home language.
While that is in progress, whole-class sound and listening routines help every student in the room, including your English learners. Our activity library has short pronunciation and listening games plus word lists for every English speech sound, useful for practising a specific sound a learner is working on. Use them as classroom support alongside any therapy, and remember that only an evaluation by a licensed SLP can determine whether a child has a disorder. The speech sound development chart shows what is expected by age.