Last updated 2026-07-09
TL;DR
Early intervention (EI) is a federally funded program for children under age 3 who have developmental delays or disabilities, including speech delays. It's free or low-cost in every U.S. state under IDEA Part C. A service coordinator manages your child's plan. You can self-refer with one phone call, and the evaluation has to happen within 45 days.
If you're worried your baby or toddler is behind and you're wondering how to get help, here's the short version: you call your state's early intervention program yourself, no referral needed, an evaluation happens within 45 days, and if your child qualifies, services start soon after. Early intervention gives babies and toddlers with developmental delays access to therapy before they turn three. It's federally funded, state-run, and written into Part C of the Individuals with Disabilities Education Act (IDEA), the law that has governed special education since 1975 and was last reauthorized in 2004.[1]
The program covers a wide band of need: gross motor delays, fine motor delays, cognitive delays, social-emotional concerns, and speech and language delays. That last category is by far the most common reason families walk through the door.
The point of EI is bigger than therapy sessions. It's building a plan around your child's specific needs, then delivering that plan wherever your child already spends the day, usually your home, a daycare, or a grandparent's house. The legal term is "natural environments," and it's a core requirement under IDEA Part C.[1] Every state runs its own version, so the name changes at the border. You might hear "Birth to Three," "First Steps," "Early Steps," or just "Part C." The federal law is identical everywhere; the delivery and service levels are not.
Who qualifies
To qualify, a child has to be under 36 months and meet one of two criteria: a measurable developmental delay in one or more areas, or a diagnosed condition that carries a high probability of causing a delay.[1] That's the whole test.
What counts as a "measurable delay" varies by state. Some use a 25% delay in one area or a 20% delay in two or more areas. Others use standard deviation cutoffs, usually 1.5 SD below the mean on a standardized test. A few states go broader and include children who are "at risk" before any delay is confirmed. Common qualifying diagnoses include autism spectrum disorder, Down syndrome, cerebral palsy, hearing loss, and genetic conditions. For speech specifically, a child with very few words at 18 months, or one who loses words they used to have, will usually qualify without much argument. Most parents don't realize you don't need a pediatrician's referral. Pediatricians can refer, and the American Academy of Pediatrics recommends developmental screening at the 9, 18, and 24 or 30 month well-child visits,[2] but you can pick up the phone and self-refer today. The program cannot charge you for the evaluation.
If your child is close to age 3, move fast. Once a child turns 3, Part C ends, and kids who still need help transition to Part B of IDEA, which covers preschool special education. Your EI service coordinator is supposed to start planning that transition at least 90 days before the third birthday.[1]
The service coordinator's role
The service coordinator holds the whole plan together. Under IDEA Part C, every family in early intervention gets one assigned at no cost.[1] This isn't a perk, it's the law.
Your coordinator schedules and coordinates the evaluation, helps write the Individualized Family Service Plan (IFSP) that spells out your child's goals and services, connects you with community resources, makes sure services show up on schedule, and runs the transition to preschool when your child nears the third birthday.
In practice, coordinators vary a lot. Some are excellent and call you before you think to call them. Others carry huge caseloads and answer slowly. If things stall, you can ask your state's lead agency for a different coordinator, that's your right.
Sykes Early Intervention Services is one example of a private company that contracts with certain states, meaning its therapists or coordinators may deliver EI on behalf of the state program. If a Sykes therapist shows up at your door, they're providing the same federally regulated services under your IFSP. The provider organization matters far less than the individual therapist's skill and fit with your family. Take service coordination seriously. A good coordinator shortens the gap between referral and services starting. A passive one can add weeks of delay in a window where every week counts.
What services look like
IDEA Part C spells out exactly which services are allowed.[1] The ones families of late talkers and autistic kids reach for most are:
- Speech-language therapy (the service EI provides most often)
- Occupational therapy
- Physical therapy
- Special instruction (developmental intervention)
- Audiology services
- Psychological services
- Service coordination (always included)
- Assistive technology, which can include AAC devices
- Vision services
- Nutrition services
- Social work services
Your IFSP decides which ones your child gets and how often. Frequency is usually written as sessions per month, though some programs count by week. "Two 60-minute speech therapy sessions per month" is a typical line, and kids with bigger delays may get more.
Something parents rarely expect: EI therapists are supposed to work with you as much as with your child. The model is coaching. The therapist shows you techniques, you practice them between visits, and the goal is building your own skill, since you're the person your child spends the most time with. It feels strange if you pictured handing your child to an expert for 45 minutes and stepping out, but it works better this way, because the waking hours your child spends with you dwarf any therapy schedule. For kids with apraxia of speech or significant speech motor difficulties, frequency matters a lot. Research on childhood apraxia of speech points to high-frequency practice beating low-frequency practice,[3] and EI plans can sometimes be adjusted to reflect that if a therapist pushes for it. If your child shows signs of autism, autism spectrum speech therapy inside EI can include naturalistic developmental behavioral interventions (NDBIs), which have a real evidence base in this age group.
What it costs
This is where most parents exhale. The evaluation is always free. Service coordination is always free. The services themselves are free or nearly free in most states. Federal law says EI services are provided at no cost to families "to the maximum extent appropriate," but it also lets states use a sliding fee scale for some services when family income sits above a threshold.[1] About half of states charge nothing at all. The rest use sliding scales, and families below 200% of the federal poverty level are usually exempt. No child can be denied services because a family can't pay: that's written into the law.
If your child has private insurance, many states bill it first, but federal law bars states from denying services when insurance refuses to pay. Medicaid-eligible children get all EI services at no cost.[1] The practical result is that most families pay nothing out of pocket. If you're asked to pay a fee and it seems off, have your service coordinator walk you through your state's exact sliding scale rules. Still unsure? The Parent Training and Information Center (PTI) in your state offers free advocacy support.[4]
How do I actually start the early intervention process?
Find your state's EI program first. The CDC keeps a state-by-state directory [5], or you can call 1-800-CDC-INFO, or just ask your pediatrician's office. Once you have the number, call and say: "I'd like to refer my child for an early intervention evaluation." That sentence starts the whole thing.
Once the referral lands, the clock starts. Federal law gives the program 45 days to finish the evaluation and, if the child qualifies, hold the IFSP meeting. [1] Some states move faster, and a few carry backlogs. If 45 days passes with no evaluation, that's a violation of federal law, and you should contact your state's lead agency.
The evaluation itself is free. A team runs it, usually a speech-language pathologist and a developmental specialist, sometimes an OT or PT depending on the concerns. They use standardized assessments and watch your child play, then send you a written report. If your child qualifies, you move straight into building the IFSP.
The IFSP meeting includes you, the service coordinator, and the evaluating team, and you're a full member of that team, not a guest. Bring an advocate, a family member, anyone you trust. The plan gets reviewed every six months and can change anytime you ask.
Services can begin the moment the IFSP is signed, so don't wait for the ink to dry before asking when the first appointment happens. In some areas, therapist availability opens a gap between signing and the first session. Push on this. Children in the 0 to 3 window are in a period of fast neural development, and every session counts.
If you're already working at home between sessions, tools like Little Words can help fill the gap with structured speech practice built for young kids with delays.
What is an IFSP, and how is it different from an IEP?
The Individualized Family Service Plan (IFSP) drives everything in early intervention. It's a legal agreement between your family and the EI program, laying out your child's current developmental levels, the outcomes you're working toward, the services your child will get, how often they happen, where they happen (natural environments), and who owns each piece.
The IFSP centers the family, and the word "Family" is literally in the name. Goals can target parents, not only children, something like "Parent will learn three strategies to encourage requesting during mealtime." That's the coaching model at the heart of Part C.
An IEP (Individualized Education Program) is the version for children ages 3 through 21 under Part B of IDEA. It's more school-focused and less family-centered. When your child ages out of EI at 3, the IFSP hands off to an IEP if they qualify for preschool special education.
The IFSP has to be reviewed every six months, but if you think your child needs more services, or different ones, you can request a meeting anytime. You don't have to wait for the review. Kids change fast at this age, and a plan written at 18 months may need rewriting by 22 months.
Does early intervention actually work for speech delays?
Yes, with some honest nuance. The research base for EI overall is strong, especially for children with significant disabilities. Work by Michael Guralnick, summarized in the Annual Review of Psychology, found that EI programs for children with established disabilities produce meaningful gains in developmental outcomes. [6]
For speech and language specifically, early therapy for late talkers and autistic children has solid support. The American Speech-Language-Hearing Association says that "early identification and treatment of speech and language disorders can significantly reduce their impact on a child's development." [7] The word doing the work there is "early." The brain is most plastic in the first three years, which is exactly the window EI targets.
For late talkers with no other diagnosis, the picture gets murkier. Rescorla's follow-up research suggests roughly 70 to 80% of late talkers at age 2 catch up to peers by school age without intervention, the so-called late bloomers. [8] The 20 to 30% who don't catch up are the group EI is trying to find early. Nobody can tell from a 24-month-old's presentation alone which group they're in. Since EI is free and the risk of doing too much is basically zero, the practical answer is simple: get the evaluation, and if your child qualifies, take the services.
Autistic children respond especially well to early, intensive intervention. Research on Early Intensive Behavioral Intervention (EIBI) and NDBIs shows better language outcomes when treatment starts before age 3 than when it starts later. [9]
For a fuller picture of what early intervention looks like day to day, it helps to understand how EI and later services differ before your child ages out.
What happens when my child turns 3 and ages out of early intervention?
This transition is one of the hardest moments in the EI system. At age 3, Part C ends, and services do not automatically continue.
If your child still needs help at 3, there are two paths. They may qualify for preschool special education under Part B of IDEA, run through your local school district, or they may continue through private therapy, private insurance, or Medicaid, outside the school system.
The transition process is supposed to start at least 90 days before the third birthday. [1] Your service coordinator should be driving this, referring your child to the local education agency (LEA), usually your school district, for a preschool eligibility evaluation. That evaluation is also free.
The eligibility rules for preschool special education (ages 3 to 5) differ from Part C rules, and some children who qualified for EI will not qualify for Part B. If that happens and you believe your child still needs support, you can request an independent educational evaluation or move to private therapy.
Watch this gap: the school district evaluation has to finish before the third birthday, and timelines can get tight. If age 3 is close and your service coordinator hasn't started a referral to the school district, raise it immediately. Don't assume it's running on its own.
Children who needed speech therapy in EI and still have a delay at 3 should also ask their SLP about continuing private speech-language therapy alongside school-based services. School SLP services focus on educational impact, which is a narrower goal than overall communication.
What if I think my child has autism? Will early intervention help?
Early intervention is one of the best moves you can make if you suspect autism, and you don't need a diagnosis to access it. If your child has developmental concerns, the evaluation will capture them, and the IFSP will address them with or without a formal diagnosis. The diagnosis itself can come later, and be pursued at the same time.
The AAP recommends autism-specific screening with the M-CHAT-R/F at the 18- and 24-month well-child visits. [2] But if you're between visits and you have concerns, don't wait for the next one. Refer to EI now.
For autistic children, early speech and language therapy inside EI often includes augmentative and alternative communication. Many young autistic children communicate more reliably with pictures, gestures, or a speech-generating device before spoken words arrive. Starting AAC devices early does not delay speech; the research points the other way. [10]
Some autistic children lean on echolalia as a primary way to communicate, and understanding what echolalia means and how to work with it instead of against it is something a good EI speech therapist should address directly in the IFSP.
If your child gets an autism diagnosis while in EI, the IFSP should be updated to match. The frequency and type of services may shift, and you can request an IFSP meeting anytime to make those changes.
What are my rights if I disagree with the evaluation or the IFSP?
Parents in EI have strong legal rights, and knowing them changes the dynamic in the room.
If you disagree with the eligibility decision (EI says your child doesn't qualify and you believe they should), you can request a second evaluation, or ask for mediation, or a due process hearing. All three are available under IDEA Part C. [1]
If you disagree with the services in the IFSP (say you think your child needs weekly therapy and they're offering monthly), you can dispute that too. Start by requesting a meeting and bringing documentation from your child's pediatrician or another evaluating professional. If that doesn't fix it, the same mediation and due process options open up.
Your state's PTI (Parent Training and Information Center) can help you understand your rights and prep for these conversations at no cost. Find your PTI through the Center for Parent Information and Resources. [4]
One thing worth holding onto: EI programs are generally not adversarial. Most coordinators genuinely want to help, and disagreements usually trace back to resource limits or differing professional opinions, not bad faith. Try the conversation first. Use the formal process only if the conversation fails.
Early intervention and private speech therapy rest on the same clinical ground, but they look pretty different day to day. EI is free, happens wherever your child already spends time (home, daycare, grandma's living room), and leans on a coaching model that puts a lot of responsibility on you as the parent. Sessions tend to be sparse, often twice a month, because the whole approach assumes you're practicing with your child every day between visits. The therapist's real job, in a sense, is training you as much as working with your child. Private speech therapy works differently. You pay for it, either through insurance or out of pocket, it usually happens in a clinic or through online speech therapy, and sessions run more often with the therapist doing more of the direct work. Kids who need something more intensive, like those with childhood apraxia of speech, often do better with private therapy either instead of or alongside EI. Plenty of families use both at once. There's nothing stopping you from getting EI services while also paying for private sessions. Some insurance plans cover private speech therapy for kids under 3, and Medicaid nearly always does, so it's worth checking your specific plan before assuming you can't afford it. My advice: start with EI since it's free and quick to get into, then add private therapy if twice-a-month sessions aren't cutting it or your child's needs are more complex. You don't need to pick one and wait to see how it goes before trying the other.Frequently asked questions
What is early intervention services in simple terms?
It's a free or low-cost government program for children under 3 who have developmental delays, speech delays included. It offers therapies like speech-language therapy, occupational therapy, and special instruction, delivered at home or at daycare. It's funded federally under IDEA Part C and run separately by each state. Any parent can call and self-refer.
At what age does early intervention stop?
It ends at the third birthday. After that, kids who still need support may qualify for preschool special education under Part B of IDEA, run through the local school district. The transition process needs to start at least 90 days before the child turns 3. Some families keep going with private therapy once EI ends.
How long does it take to start receiving early intervention services?
Federal law gives programs 45 days from referral to complete the evaluation and hold the IFSP meeting, though it often moves faster than that. Services can start as soon as the IFSP is signed. The real bottleneck is usually therapist availability, which can leave a gap of a few weeks between the signed plan and the first session.
Does my child need a diagnosis to qualify for early intervention?
No. Kids qualify based on a measurable developmental delay, which the EI evaluation checks for using standardized tests, not a formal diagnosis. A child who might have autism can start EI services while a diagnostic evaluation is still underway. You don't need a doctor's referral either.
Is early intervention free?
Evaluation and service coordination are always free under federal law. Actual services are free in roughly half the states. The rest use a sliding fee scale, though families under certain income thresholds (often 200% of the federal poverty level) pay nothing. No family can be turned away from EI services because they can't pay.
Who is an early intervention service coordinator and do I need one?
Every family in EI gets one automatically, it's a legal requirement under IDEA Part C. This person schedules evaluations, helps build the IFSP, connects you with resources, keeps an eye on how services are going, and manages the move to preschool services at age 3. You don't choose whether to have one; it comes with the program at no cost.
What is Sykes Early Intervention Services?
Sykes is a private company that contracts with state EI programs in certain areas to supply therapists and service coordinators. If your family works with a Sykes employee, they're still delivering services under your IFSP, following the same IDEA Part C rules as anywhere else. It's a provider organization, not a separate program, so your rights don't change.
Can I self-refer my child to early intervention without a doctor's referral?
Yes. IDEA Part C spells out that parents can self-refer, so you can call your state's EI program directly and ask for an evaluation. Pediatricians and childcare providers can refer too, but it's not required. You can find your state's contact through the CDC's directory or by calling 1-800-CDC-INFO.
What happens at an early intervention evaluation?
A team, usually including a speech-language pathologist and a developmental specialist, observes your child and runs standardized developmental assessments. It's free and has to cover every area of concern you've raised. You get a written report, and if your child qualifies, an IFSP meeting gets scheduled. The whole thing, from referral to IFSP, has to happen within 45 days.
Can my child get speech therapy through early intervention if they only have a speech delay?
Yes, and it's actually the most common reason kids enter EI. A child with noticeably fewer words than expected, unclear speech, or one who's lost words they used to say will typically qualify. The SLP on the evaluation team documents the delay with standardized measures, and speech-language therapy gets built into the IFSP.
What is the difference between an IFSP and an IEP?
An IFSP (Individualized Family Service Plan) is the EI document for kids under 3, and it's built around the family and the child's natural environments. An IEP (Individualized Education Program) covers ages 3 to 21 in school-based special education under Part B of IDEA. The IEP is more school-focused and less centered on the family.
Does early intervention work for late talkers?
The evidence backs early speech-language therapy for late talkers. About 70 to 80% of late talkers at age 2 catch up on their own, but there's no reliable way to predict which kids will be in that group. Since EI is free and there's no real downside to starting early, most specialists recommend evaluation and services for any child with a significant delay rather than waiting around to see what happens.
What if my child is almost 3? Is it too late for early intervention?
Refer right away. Even a few months of EI can help, and the team will also handle the transition to preschool special education before your child turns 3. The referral to your school district for preschool eligibility needs to happen soon enough that evaluation can wrap up before the birthday. If your child is close to turning 3, contact your state's EI program today.
Can early intervention services be delivered at daycare instead of at home?
Yes. IDEA Part C calls for services in "natural environments," which covers any setting your child regularly spends time in, daycare or a grandparent's house included, not just your own home. If your child is at a childcare center most of the day, services can happen there. Bring this up with your service coordinator while you're putting together the IFSP.
Sources
- U.S. Department of Education, IDEA Part C statute and regulations (34 CFR Part 303): IDEA Part C requires free evaluation, service coordination, services in natural environments, 45-day timeline, and transition planning starting 90 days before age 3
- American Academy of Pediatrics, Developmental Surveillance and Screening: AAP recommends developmental screening at 9, 18, and 24 or 30 month well-child visits and autism-specific screening with M-CHAT-R/F at 18 and 24 months
- ASHA, Childhood Apraxia of Speech practice portal: High-frequency practice is more effective than low-frequency for childhood apraxia of speech treatment
- Center for Parent Information and Resources (CPIR), Parent Training and Information Centers: PTI centers provide free advocacy support and help families understand IDEA rights
- CDC, State Early Intervention Program contacts: CDC maintains state-by-state directory of early intervention program contacts
- Guralnick MJ (2011). Why Early Intervention Works: A Systems Perspective. Annual Review of Psychology: Review found EI programs for children with established disabilities produce meaningful improvements in developmental outcomes
- American Speech-Language-Hearing Association (ASHA), Early Intervention: ASHA states that early identification and treatment of speech and language disorders can significantly reduce their impact on a child's development
- Rescorla L (2009). Age 17 language and reading outcomes in late-talking toddlers. Journal of Speech Language and Hearing Research, 52(1), 16-30.: Approximately 70 to 80% of late talkers at age 2 catch up to peers by school age
- Estes A et al. (2015). Long-term outcomes of early intervention in autism. Pediatrics, 136(6).: Early intensive behavioral intervention for autism produces better language outcomes when started before age 3 compared to starting later
- Ganz JB et al. (2012). A meta-analysis of single case research studies on aided augmentative and alternative communication systems with individuals with autism spectrum disorders. Journal of Autism and Developmental Disorders, 42(1), 60-74.: Early AAC use does not delay speech development and research suggests it supports speech emergence in children with autism
- U.S. Department of Education, IDEA Part C data tables (OSEP annual report to Congress): Over 400,000 infants and toddlers receive early intervention services annually in the United States