Part C to Part B Transition for Speech Therapy: Keeping Services When Your Child Turns 3

Why the Third Birthday Is a Cliff Edge for Speech Services

Under IDEA Part C, your child receives early intervention services at home — often 2-3 speech therapy sessions per week delivered by a private SLP in your living room. The sessions are individualized. The therapist knows your child. Progress has been steady.

Then your child turns 3, and the service system changes. Part C services generally end at age 3, although a state may offer an extension option for some children. Part B (Section 619, preschool special education) begins only if your child is found eligible. The transition is from a home-based, family-centered service model to the local school district's system, where proposed services often look nothing like what your child has been receiving.

Parents routinely report that the school offers 30 minutes of group speech therapy once a week to replace the 2-3 hours per week of individual therapy their child received under Part C. For a child with childhood apraxia of speech or significant language disorder, that reduction can mean losing ground that took years to build.

The Timeline You Need to Know

For a child eligible for Part B, federal law (34 CFR § 300.124) requires the IEP to be developed and implemented by age 3. If the district misses the deadline, document the gap and seek an appropriate remedy, which may include compensatory services; the remedy is based on the circumstances and is not automatically one-for-one for every missed minute.

The critical milestones:

Between 9 months and 90 days before the third birthday: With family approval, the transition conference must be held with your Part C service coordinator and a school district representative to plan the transition.

After you consent to the Part B evaluation: The initial evaluation must generally be completed within 60 calendar days, or within the timeframe set by your state. The school district conducts its own evaluation to determine eligibility under Part B — the Part C diagnosis doesn't automatically transfer. This is where problems start, because the school's evaluation may be less comprehensive than the clinical assessments that drove your Part C services.

By the third birthday: If your child is eligible, the IEP must be in effect. If the third birthday falls during summer, the IEP team determines when services begin.

Preventing the Service Drop

The transition conference is your opportunity to advocate for continuity. Bring:

• Part C service records showing exactly what your child has been receiving — session frequency, duration, individual vs. group, therapy approach
• Progress data from your Part C therapist documenting improvement under the current service model
• Private evaluation reports if you have them — a comprehensive private SLP evaluation carries significant weight at the table

At the conference, push for these specifics:

Request a comprehensive school evaluation. Don't let the district rely on a brief screening. For a child with suspected CAS, the evaluation must include a dynamic motor speech assessment. For DLD, it must include a language sample analysis, not just a standardized test. Under IDEA, the evaluation must assess all areas of suspected disability.

Challenge group placement. If your child has been receiving individual therapy under Part C and making progress, the burden is on the school to explain why group therapy will maintain that progress. Ask for clinical justification, not administrative convenience.

Request service minutes that reflect your child's needs. The school's standard preschool speech model may be 2x20 minutes weekly. If your child's diagnosis (CAS, severe DLD, AAC needs) requires more intensive services, document why — bring the research, bring the private SLP's recommendations, and bring your Part C progress data showing what service level produced results.

Preschool IEP Goals for Speech

Preschool speech goals should be functional and observable — grounded in how the child communicates in daily routines, not just in structured therapy tasks.

For a 3-year-old with speech sound delays: "During structured play activities, Student will produce target speech sounds (/p, b, m, t, d, n/) in initial position of single words with 70% accuracy across 3 consecutive data sessions, as measured by SLP probe data."

For a 3-year-old with emerging language: "During classroom routines (snack, circle time, free play), Student will use 2-word combinations to request, comment, or protest in 8 out of 10 observed opportunities across 3 sessions, as measured by SLP observational data."

For a 3-year-old using AAC: "Using a communication board or speech-generating device, Student will independently select core vocabulary symbols to make requests during 4 out of 5 daily classroom transitions, as measured by classroom staff data collection."

When Part C Services Were Better

If the school district's proposed preschool IEP represents a significant reduction from Part C services, you're not imagining the gap. The two systems operate under different philosophies — Part C is designed around the child's developmental needs, while Part B is structured around educational settings and school-based service delivery.

That philosophical difference doesn't override IDEA's requirements. The school district must still provide FAPE. If your child needs intensive individual speech therapy to make "appropriately ambitious" progress under the Endrew F. standard, the district cannot offer less simply because "our preschool program provides group therapy."

Document the gap. Request Prior Written Notice for any refusal to match the intensity of Part C services. And if the school's evaluation misses what the Part C assessments found, request an Independent Educational Evaluation at public expense.

The Speech-Language & Apraxia IEP Toolkit covers the Part C to Part B transition with a service-intensity worksheet, preschool-appropriate IEP goals, and advocacy scripts for the transition conference — so the birthday that should be a celebration doesn't become the day your child's speech services disappear.