Child development

How Early Intervention Works in Washington

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ESIT sits inside Washington's Department of Children, Youth, and Families, created in 2018 when the state merged its early-learning agency with child-protection functions, and its Family Cost Participation policy waives fees entirely for any family determined unable to pay. This guide covers how to refer a child, what the 45-day evaluation involves, how Washington decides what a family owes, and what happens at the transition to preschool at age three.

Last updated: July 2026

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ESIT: Washington's Early Intervention System

Washington's federally required Part C system is called Early Support for Infants and Toddlers, or ESIT, and the Department of Children, Youth, and Families is the state's designated lead agency, serving children from birth to their third birthday who have a disability or developmental delay 1.

Washington folded ESIT into DCYF in 2018, when the state merged its early-learning agency with child-protection and, later, juvenile-rehabilitation functions into a single children's-services department, rather than housing early intervention inside a health department the way many states do. That structure means a family's early intervention case sits within the same state agency responsible for child welfare and foster care, even though ESIT itself has nothing to do with a child-protection investigation.

Referring a Child in Washington

A parent, doctor, or other caregiver can refer a baby or toddler to ESIT, and a parent can refer their own child directly without needing a physician's order or a completed diagnosis first 2. Washington also connects families through a statewide Help Me Grow referral line, which can point a family toward the ESIT provider serving their area if they are unsure who to contact.

Once a referral is accepted, a service coordinator is assigned and stays involved through evaluation and, if the child qualifies, through the life of the Individualized Family Service Plan 3. A parent does not need to be certain a concern is serious enough to act on; the evaluation itself makes that determination.

Who Qualifies for ESIT

A child under three qualifies for ESIT with a documented delay in an area such as communication, motor skills, cognition, social-emotional development, or adaptive skills, or with a diagnosed condition carrying a high probability of causing such a delay 4. Washington, like every state, sets its own delay threshold above the federal floor, so a family moving from another state should not assume the same cutoff applies here.

An autism diagnosis can support eligibility but does not have to come first, and a family can refer a child to ESIT while a separate autism evaluation is still pending 2. A multidisciplinary evaluation team, working with the family, makes that determination together, rather than any single clinician deciding alone.

The 45-Day Evaluation Timeline

Federal law requires the evaluation and the first IFSP meeting to be completed within 45 days of an accepted referral, and every ESIT provider in Washington is held to that same clock 5. Child Find outreach, the evaluation itself, IFSP development, and service coordination are always provided at no cost to the family, regardless of income or insurance status.

If a family suspects their local ESIT provider is falling behind that 45-day window, asking the assigned service coordinator directly what is holding up scheduling is the most direct path to an answer, since the deadline is a federal entitlement rather than a target a provider can treat as optional. A family whose child does not qualify should still receive a written explanation and information about other resources nearby.

Washington's Family Cost Participation Policy

ESIT charges a monthly Family Cost Participation fee based on household income and family size, but any family determined to have an "Inability to Pay" owes nothing for the services that fee would otherwise cover 1. Families can ask for their monthly fee to be recalculated any time their income or expenses change, and a hardship exception can be requested if the standard fee genuinely does not fit a family's situation.

Core services — Child Find, evaluation, IFSP development, and service coordination — are never subject to this fee at all. A family that falls behind on payments is not simply cut off — Washington's policy calls for working out a payment plan first, and only pauses services after an extended period of nonpayment.

The IFSP and Where Services Happen in Washington

The provider and family produce an Individualized Family Service Plan, or IFSP, listing the specific services a child will receive, how often, and where 5. Washington, like most states, delivers the majority of these services in a child's natural environment — home or child care — rather than requiring a family to travel to a clinic, and some direct therapies may be billed to a family's insurance, but only with the family's written consent.

The plan is reviewed periodically and can be revised if a child's needs change before the next scheduled review. A family can decline any one service on the IFSP without losing eligibility for the rest, and can ask for an earlier review if something is not working.

Turning Three: Washington's Move to Preschool Special Education

Eligibility for ESIT ends at a child's third birthday, and the local school district, overseen by the Office of Superintendent of Public Instruction, takes over deciding whether the child qualifies for preschool special education under Part B 67. Transition planning is required to start well before that birthday specifically so services do not lapse.

A child does not start over from zero — the existing evaluation and IFSP inform the school district's review, though how an IFSP becomes an IEP involves its own eligibility categories, its own team, and its own paperwork. The federal law underneath ESIT is the same nationwide: a family relocating would find early intervention in Virginia, early intervention in North Carolina, early intervention in North Dakota, early intervention in Rhode Island, or early intervention in Alabama built on the identical IDEA Part C floor, run by a different state Part C lead agency with its own structure and fee rules. Only the lead agency running that state's Part C system, and the rules attached to it, actually change from one state to the next.

Common questions

No. Eligibility is based on a documented developmental delay or a diagnosed condition likely to cause one, and neither requires a completed autism evaluation first. A family can refer to ESIT while a separate autism evaluation is still pending or not yet scheduled.

No. A parent can refer their own child directly to ESIT without a physician's order first. A doctor or other concerned caregiver can also make the referral, but Washington does not require a physician's referral before an evaluation can be scheduled and begin.

Child Find, evaluation, IFSP development, and service coordination are always free. Washington charges a monthly Family Cost Participation fee for some other services, based on income and family size, but any family determined unable to pay owes nothing at all.

Washington's policy calls for the EI program to work with a family on a payment plan first. Only after payments fall more than 90 days behind, without a plan in place, may IFSP services be paused, and a family can ask for its fee to be re-evaluated at any time.

ESIT eligibility ends at age three, and the local school district decides whether the child qualifies for preschool special education under Part B instead. Transition planning starts well before the birthday, using the existing evaluation and IFSP as a starting point rather than beginning from scratch.

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When a developmental concern needs faster attention

  • —Loss of words, gestures, or social skills a child previously had, at any age
  • —No response to their name and no pointing or waving by 12 months
  • —No back-and-forth smiling or shared enjoyment with a caregiver by 6 months
  • —A new feeding, sleep, or seizure-like event alongside the developmental concern

This guide is general information about Washington's public early intervention system, not medical or legal advice for any specific family. Confirm current eligibility, fees, and the assigned ESIT provider directly with DCYF.

References

  1. 1.Early Childhood Technical Assistance Center (federally funded) (2024). Part C of IDEA. ECTA Center. link ✓Authoritative reference on Part C program structure, including that states designate their own lead agency and may charge a family cost share, with an inability-to-pay protection, for some services under federal rules.
  2. 2.Centers for Disease Control and Prevention (2024). Accessing Services for Autism Spectrum Disorder. CDC — Autism Spectrum Disorder (ASD). linkThat families can access early intervention (Part C, birth to 3) without waiting for a completed formal autism diagnosis.
  3. 3.Center for Parent Information and Resources (OSEP-funded) (2023). Part C of IDEA: Early Intervention for Babies and Toddlers. Center for Parent Information and Resources. link ✓Step-by-step parent-facing guidance on how families access Part C early intervention, including the service coordinator's role from referral onward.
  4. 4.U.S. Department of Education (2024). IDEA Early Intervention Program for Infants and Toddlers with Disabilities (Part C). U.S. Department of Education. link ✓That IDEA Part C provides early intervention services to children birth through age 2 with disabilities or developmental delay, administered by a state-designated lead agency.
  5. 5.U.S. Department of Education, Office of Special Education Programs (2024). Part 303 (Part C) — Early Intervention Program For Infants And Toddlers With Disabilities. IDEA — sites.ed.gov/idea. link ✓The federal regulatory 45-day timeline from referral to a completed evaluation and initial IFSP meeting, and IFSP content requirements, under Part C.
  6. 6.U.S. Department of Education, Office of Special Education Programs (2024). IDEA Part C: Early Learning and Early Childhood. IDEA — sites.ed.gov/idea. link ✓The transition from Part C (birth–3) toward Part B preschool special-education services at age 3.
  7. 7.U.S. Department of Education, Office of Special Education Programs (2024). About IDEA. IDEA — sites.ed.gov/idea. link ✓That IDEA Part B guarantees FAPE for children ages 3-21 and that the IEP is the vehicle for that entitlement, distinct from the Part C IFSP.

7 sources, numbered by first appearance. General health information, not medical advice. AI-assisted editorial content — citations link their sources. Editorial policy

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