Last updated 2026-07-10
TL;DR
Early intervention (EI) is a federally funded program under IDEA Part C for children birth to age 3 with developmental delays. The process runs: referral, evaluation within 45 days, eligibility decision, an IFSP meeting, and then services begin, often in your home. Most families pay nothing or very little out of pocket.
Early intervention is the name people use for the program created by Part C of the Individuals with Disabilities Education Act (IDEA). Federal law requires every state and territory to run an EI program for children from birth through the day before their third birthday who have a developmental delay or a diagnosed condition likely to cause one.[1] The federal government sets the floor, but states run things their own way, so the name and lead agency differ. Some call it Early Steps, others First Steps or BabyNet. The rights and timelines underneath, though, are federal and apply everywhere.
Speech and language delays are one of the most common reasons families end up here. ASHA notes that Part C services often include speech-language pathology, occupational therapy, physical therapy, and developmental instruction.[2] Your child doesn't need a diagnosis to qualify: a delay in reaching milestones is enough. And one thing worth holding onto as you read further: you never pay for the evaluation. That's a federal guarantee.
Starting the referral
Anyone can make a referral. A pediatrician, a daycare teacher, a grandparent, or you can contact your state's EI program directly, and you don't need a doctor's order to do it. If your child's pediatrician raises a concern at a well-child visit, they should hand you the name or number of your state's referral contact. The American Academy of Pediatrics recommends developmental surveillance at every well-child visit, formal screening at 9, 18, and 30 months, and autism-specific screening at 18 and 24 months.[3] If a screening flags something, the referral should happen that same day, not weeks later.
To refer your own child, search "[your state] early intervention" and look for the lead agency, usually a state health or education department. The CDC's "Learn the Signs. Act Early." program also keeps a state-by-state contact directory.[4] Once the referral goes in, the clock starts.
The 45 days after referral
Federal law gives states 45 calendar days from referral to the day services begin.[1] That window has to cover the evaluation, the eligibility decision, the planning meeting, and the first service session. States often split that into smaller internal deadlines, and a handful with large rural populations have exceptions for geography, but 45 days is the number you can hold anyone to.
Within a few days, you'll hear from a service coordinator, someone whose whole job is to walk you through the system: scheduling the evaluation, explaining your rights, sitting in on meetings, connecting you to other resources. Service coordination is itself a required EI service, and it costs nothing.[1]
Then comes the evaluation. It's multidisciplinary, meaning more than one type of professional assesses your child. For a speech concern, that usually means a speech-language pathologist plus at least one other evaluator, often a developmental specialist or occupational therapist. They'll look at cognition, communication, social-emotional development, adaptive behavior, and motor skills, watch your child play, and ask you plenty of questions, since parents know their child's everyday functioning better than anyone in the room. You're allowed to be present for all of it, and you can request an interpreter if English isn't your first language.
Qualifying for services
After the evaluation, the team decides eligibility, and each state sets its own criteria within federal guidelines. Most qualify children one of two ways: a diagnosed condition that typically causes delay (Down syndrome, hearing loss) or a measured delay in one or more developmental areas.
States vary a lot on the delay thresholds. Common cutoffs are 25% or 33% delay in a single area, or a smaller delay spread across several. Some states are more generous, some stricter, so ask your service coordinator how your state defines it before the eligibility meeting so there are no surprises.
If your child qualifies, great. If not, you can ask for a second opinion or an independent evaluation at no cost. Your procedural safeguards notice spells out the full appeals process.[1] Some parents feel embarrassed when their child doesn't qualify, like they overreacted, but they didn't. Getting your child checked is always the right call. Kids who don't qualify for EI can often be referred to other community programs or to the local school district's Child Find program, which picks up at age 3 under IDEA Part B.
The IFSP, and how it differs from an IEP
Once your child qualifies, the team schedules an Individualized Family Service Plan meeting, and this has to happen inside the same 45-day window.[1] The IFSP is the document that drives everything: your child's current abilities, the outcomes you're working toward, the specific services, how often and how long they'll run, and who's responsible for each one. What surprises a lot of parents is that the plan is built around the family as much as the child, with your priorities, strengths, and daily routines woven into it.
An IFSP gets reviewed at least every six months and rewritten at least once a year, and you can ask for a meeting to change it anytime in between.
The Individualized Education Program, or IEP, is the Part B equivalent for kids ages 3 to 21 in school. The IFSP covers birth to 3, leans more family-centered, and is meant to live inside everyday home routines rather than pull-out sessions in a clinic. That difference is intentional.[2] You sign the IFSP before services start, and you can accept all of it, part of it, or none. Signing doesn't lock you in forever.
Where services happen
Federal law requires EI services to happen in the child's "natural environments" to the maximum extent appropriate.[1] Usually that's your home, but it can also be daycare, a grandparent's house, a park, anywhere your child spends regular time. This isn't just convenient scheduling, it's the model. Research on naturalistic developmental behavioral interventions consistently shows that building communication practice into real routines, like bath time, snack time, or getting dressed, produces stronger carryover than isolated clinic sessions. A 2020 review in the journal Language, Speech, and Hearing Services in Schools found that parent-implemented intervention in natural environments was linked to meaningful gains in child communication outcomes.[5]
What a session looks like depends on the service. An SLP doing EI speech therapy isn't sitting across a table drilling sounds; they're coaching you while you play with your child, showing you how to respond to what your child is trying to communicate and how to build language into the moment. You're the intervention. The therapist is your coach. Families who want extra practice between visits sometimes use tools like the Little Words app, which gives parents research-informed activities for everyday routines at home.
What it costs
The evaluation is always free.[1] Beyond that, cost depends on your state. Some states cover all EI services at no charge; others use a sliding fee scale tied to family income. Federal law bars states from charging fees that would create a barrier to participation, and service coordination, evaluation, and IFSP development must always be free.[1] Many families with private insurance find that EI bills the insurer first and they never see a bill themselves.
The federal government funds EI through grants to states: in federal fiscal year 2023, Part C of IDEA received approximately $496 million in federal appropriations, with states and localities adding money on top.[6] This program is built to be reachable, so don't let worry about cost keep you from calling.
| Cost item | Federally required to be free? | Typical family experience |
|---|---|---|
| Evaluation | Yes | Always free |
| Service coordination | Yes | Always free |
| IFSP development | Yes | Always free |
| Therapy services | No | Often free or sliding scale; insurance billed first |
| Assistive technology | No | Often free; varies by state |
If your state tries to charge you for an evaluation, that's a federal violation. Contact your state's Part C lead agency or a parent training and information center in your state.
Early intervention covers a lot more than most parents expect walking in. Speech-language pathology is one of the most common services offered, and an SLP working with this age group might address late talking, early stuttering, feeding and swallowing issues, or communication development in children with autism, Down syndrome, hearing loss, or other diagnoses. For kids with significant communication needs, EI teams can also bring in augmentative and alternative communication, things like picture-based systems or speech-generating devices. AAC doesn't replace speech development, it supports it, and the research is clear that using it does not reduce a child's motivation to talk. Children showing signs of childhood apraxia of speech, a motor speech disorder, can get targeted therapy through EI too, and the evidence for treating apraxia early is strong given how much neuroplasticity exists in the birth-to-3 window. ASHA's scope of practice for speech-language pathologists specifically covers the birth-to-3 population, and ASHA maintains guidance relevant to EI.[2] If the SLP on your team hasn't worked much with very young children, you're allowed to ask for someone with more EI-specific experience. For families whose children show early signs of autism, approaches like JASPER, ESDM, or PRT (part of what's often called autism spectrum speech therapy) are sometimes available through or alongside EI, depending on your state's provider network. **When your child turns 3, things shift.** The move from EI to preschool special education is known as the Part C to Part B transition, and it shouldn't sneak up on you: federal law requires transition planning to start at least 90 days before your child's third birthday.[1] Around that 90-day mark, your service coordinator holds a transition conference, and the EI team may refer your child to the school district for a Part B evaluation. That evaluation is free, and the district decides from there whether your child qualifies for preschool special education. If they qualify, they get an IEP instead of an IFSP and move into a school or center-based setting. If they don't qualify because they've made enough progress, that's genuinely good news, and your coordinator can help you find community-based options instead. One practical thing to know: EI and the school district don't automatically share information well. Ask your service coordinator to help you pull together copies of all evaluations, progress notes, and the IFSP before EI ends, and bring them to the school district evaluation yourself. Your rights under Part C of IDEA are substantial, and the procedural safeguards notice spells them out. You should get a copy at your first IFSP meeting and any time you ask for one afterward.[1] Among the big ones: you can give or withhold consent at every step, from referral to evaluation to each individual service on the IFSP. You can request an independent evaluation if you disagree with EI's findings. You're entitled to prior written notice before any proposed change, and you have access to mediation or a due process hearing if there's a dispute. You can also pull consent for one service without losing the others. Parent Training and Information Centers, funded under IDEA, exist in every state and are free, built specifically to help families understand these rights and work through disagreements.[7] The Center for Parent Information and Resources keeps a directory on their website. If you ever feel rushed at a meeting, slow down. You don't have to sign anything on the spot: take the document home, read it, and call your PTI first. As for making any of this actually work day to day: the research consistently shows that parent involvement predicts outcomes more than anything else. Kids make the most progress not because they see a therapist often, but because their parents carry the strategies into ordinary life between sessions. Most services run about an hour a week, which leaves 167 other hours where it's just you and your child. So ask your SLP for something specific to do during a specific routine, not "talk more" but something like "wait five seconds after the toy before handing it over, then model the word once if they don't try it." If a session ends without a clear takeaway, just ask: what's the one thing to practice this week? If your SLP offers video feedback, take it, even though watching yourself is awkward, because it's useful. Families wanting more structure between sessions sometimes turn to the Little Words app, which builds evidence-based language activities into everyday routines instead of adding separate homework. And go easy on yourself: you've been dropped into a system built for professionals, and reading this far already puts you ahead of most. Does any of this actually work? Yes, and the evidence is solid enough that ASHA, the AAP, and the CDC all recommend early referral without hesitation. A 2019 meta-analysis in Pediatrics compared children who received EI to those who didn't and found real, consistent positive effects on cognitive and social-emotional outcomes, especially for kids from low-income households, across dozens of studies.[8] For language specifically, the birth-to-3 window matters because the brain does more rapid language development then than at any later point. A 2021 review in the Journal of Speech, Language, and Hearing Research found that children who got naturalistic language intervention early on had significantly better receptive and expressive language by school age than waitlisted kids.[9] The honest caveat is that EI only works this well when it's frequent enough and matched to the child's actual needs: a single 30-minute visit a month won't move much. If your IFSP proposes a frequency that feels thin, ask why and push for more. Nobody has perfect data yet on the ideal dose for every kind of delay, that research is still catching up, but what's already clear is that doing something beats waiting around.Common questions about early intervention
To start the process, contact your state's early intervention program directly. You don't need a doctor's order: you can self-refer. Search your state name plus "early intervention" to find the lead agency's referral line, or check the CDC's Act Early program, which keeps a state-by-state contact list. Once you call, a service coordinator usually reaches out within a few days and takes it from there.
Federal law gives programs 45 calendar days from referral to the start of services, and that window has to cover the evaluation, the eligibility decision, the IFSP meeting, and the first session. In practice, evaluations themselves often happen within 2 to 4 weeks of referral. A few states with large rural areas have limited exceptions, but 45 days is the federal standard you can count on.
If your child doesn't qualify, ask for a written explanation and a copy of the evaluation report. You're entitled to an independent evaluation at no cost if you disagree with the findings. Kids who don't qualify for EI can often be referred to the local school district's Child Find program (for ages 3 and up) or to community-based speech therapy, so not qualifying doesn't mean there's nothing left to try. A diagnosis isn't required to get services, either. Most states qualify children based on a measured developmental delay, usually 25 to 33 percent behind age expectations in one or more areas, so a late-talking child with no formal diagnosis can and should still be referred. The team evaluates based on observed skills and standardized measures, not a label.
The IFSP (Individualized Family Service Plan) covers children birth to 3 under IDEA Part C, is family-centered, and typically plays out in natural home environments. The IEP (Individualized Education Program) takes over from ages 3 to 21 under IDEA Part B, is child-centered, and typically operates in a school setting.
Evaluation and service coordination are always free, by federal law. Whether therapy itself costs anything depends on your state: some cover everything free, others use income-based sliding scales, and many bill private insurance first. Ask your service coordinator exactly how your state handles family fees before the IFSP meeting so nothing catches you off guard.
There's no universal standard for how often therapy happens. The IFSP team, you included, decides frequency based on your child's needs, and one to two hours of speech-language services per week is a common starting point. Research suggests more frequent sessions combined with consistent parent practice at home lead to better outcomes, so if the proposed frequency feels light, ask the team to walk you through their reasoning and push for more if it seems warranted.
Transition planning has to begin at least 90 days before your child's third birthday. Your service coordinator should hold a transition conference and can refer your child to the local school district for an independent evaluation under IDEA Part B, which may lead to preschool special education services with an IEP. Gather all your EI records before services end and bring them to that evaluation.
EI is also one of the main ways children with or at risk for autism get early support, and no autism diagnosis is needed to receive services. Delays in communication or social interaction alone can qualify a child. Approaches used in EI like ESDM and JASPER have strong research support for improving communication in young autistic children.
If you disagree with the team's recommendations, you can request an independent evaluation at no cost, ask for mediation, or request a due process hearing. Before escalating, ask for the reasoning in writing, and consider contacting your state's Parent Training and Information Center (PTI) for free advocacy support. The Center for Parent Information and Resources keeps a directory of PTIs by state.
Services don't have to happen at home. Federal law requires intervention in the child's natural environments, which can include daycare if that's where your child spends real time. You and the EI team decide together which settings make sense, and having services at daycare can help the staff there pick up strategies too, which benefits your child through more of the day.
Echolalia, the repetition of words or phrases heard from others, either right away or after a delay, is common in children with autism and in some late talkers. It's worth mentioning to your EI team: it's useful diagnostic information and can shape how the SLP builds communication goals. You can read more about what it means and how to respond on our page about echolalia.
Progress gets reviewed at every IFSP meeting, at minimum every six months, so ask your service coordinator for progress data in plain language before each one. A good SLP tracks specific outcomes over time, like the number of words used spontaneously or how long a child's utterances are. If your child hasn't progressed in two to three months, ask whether the approach, frequency, or goals need to change. Stalled progress is a signal to adjust, not a final verdict.
Sources
- U.S. Department of Education, IDEA Part C statute and regulations (34 CFR Part 303): Federal requirements for the 45-day timeline, natural environments, free evaluation, service coordination, transition planning at 90 days, and procedural safeguards under IDEA Part C
- American Speech-Language-Hearing Association (ASHA), Early Intervention: ASHA guidance on SLP scope of practice in early intervention and Part C service types including speech-language pathology
- American Academy of Pediatrics (AAP), Developmental Surveillance and Screening: AAP recommendation for developmental surveillance at every well-child visit and formal screening at 9, 18, and 30 months, plus autism-specific screening at 18 and 24 months
- CDC, Learn the Signs. Act Early. State Early Intervention Contact Directory: CDC's Act Early program maintains state-by-state early intervention contact information for referrals
- Language, Speech, and Hearing Services in Schools (LSHSS), parent-implemented intervention review, 2020: Parent-implemented intervention in natural environments was associated with meaningful gains in child communication outcomes per a 2020 review in LSHSS
- U.S. Department of Education, IDEA Part C Federal Appropriations FY2023: Federal Part C of IDEA received approximately $496 million in federal appropriations in FY2023
- Center for Parent Information and Resources (CPIR), Parent Training and Information Centers: Parent Training and Information Centers are federally funded under IDEA and available in every state to help families understand their rights
- Pediatrics, meta-analysis of early intervention outcomes, 2019: A 2019 meta-analysis in Pediatrics found positive effects of EI on cognitive and social-emotional outcomes, particularly for children from low-income households
- Journal of Speech, Language, and Hearing Research (JSLHR), naturalistic language intervention review, 2021: A 2021 review in JSLHR found children who received naturalistic language interventions in early childhood showed significantly better receptive and expressive language outcomes at school age compared to waitlisted controls