Wyoming Early Intervention to Preschool: Transitioning from Part C to Part B at Age 3

When your child turns 3, early intervention services under Wyoming's Part C program end. What replaces them — if anything — is determined entirely by how well the transition to Part B school-based special education is handled. Many Wyoming families discover, too late, that this handoff does not happen automatically. If you do not act before your child's third birthday, services can stop entirely while the school district completes its evaluation.

Understanding the Two Systems

Part C (Early Intervention): Wyoming's Early Intervention and Education Program (EIEIP), operated by the Wyoming Department of Health, serves children from birth through age 2 who have developmental delays or established conditions that are likely to result in delays. Services are delivered in natural settings — home, childcare, community — and are guided by an Individualized Family Service Plan (IFSP) rather than an IEP.

Part B (School-Age Special Education): At age 3, children who may continue to need special education services transition to Part B services under the Wyoming Department of Education. Part B is governed by Wyoming Chapter 7 Rules, uses IEPs rather than IFSPs, and is delivered in educational settings including preschool classrooms.

The transition from Part C to Part B is not automatic. Your child must be evaluated for Part B eligibility, an IEP must be developed if they qualify, and services under Part B must be in place by the third birthday so there is no gap in services.

The Transition Timeline You Need to Know

The transition process should begin well before your child turns 3. Under federal law and Wyoming procedures:

By age 2 years, 6 months (six months before the third birthday): Your child's service coordinator at EIEIP should initiate the transition planning process. This includes notifying the local education agency (your school district) that your child is approaching eligibility for Part B services, and developing a transition plan within the IFSP.

Transition conference: A transition conference must be held at least 90 days before the child's third birthday. The purpose is to discuss what services may be available under Part B, how the evaluation will proceed, and what families can expect.

Referral for Part B evaluation: The referral to the school district for a Part B eligibility determination typically happens through the transition planning process. Once referred, the district must obtain your consent and complete the evaluation within 60 calendar days.

IEP in place by the third birthday: If your child is found eligible for Part B services, an IEP must be written and services must begin by the third birthday. There should be no gap between the last day of Part C services and the first day of Part B services.

In practice, this timeline is frequently compressed or missed in Wyoming due to staffing shortages, geographic distance, and coordination gaps between the Department of Health (which runs Part C) and individual school districts (which run Part B). If your service coordinator has not initiated transition planning by the time your child is 2.5 years old, follow up in writing immediately.

Developmental Delay as an Eligibility Category

For children ages 3 through 9, Wyoming allows school districts to use "developmental delay" as an eligibility category for special education. This is an important provision because it allows children who have documented delays across developmental domains — cognitive, adaptive, communication, social-emotional, or physical — to receive services without needing to meet the criteria for a specific disability category like autism or speech-language impairment.

The developmental delay category is discretionary: Wyoming permits districts to use it, but individual districts decide whether they elect to do so. Most Wyoming districts do use it, but you should confirm your district's practice at the outset of the evaluation process.

Using the developmental delay category can be strategically beneficial for young children whose delays are documented but whose specific disability profile has not yet fully emerged. It avoids premature labeling while ensuring services are provided during a critical developmental window.

Developmental delay eligibility under Part B requires the child to meet the district's specific criteria, which are set within parameters established by the Wyoming Department of Education. The evaluation must assess the child across all areas of suspected delay using multiple measures — not a single test — and must include observation in multiple settings.

Wyoming Preschool Special Education Services (Ages 3–5)

Under Part B, Wyoming school districts must make preschool special education services available to eligible children ages 3 through the beginning of the school year following their fifth birthday. These services must be delivered in the least restrictive environment appropriate to the child's needs.

What "least restrictive environment" means for a preschool child depends on the child's individual needs. Options range from placement in an inclusive community preschool setting with IEP services provided there, to a specialized preschool classroom within the school district, to home-based services for children with significant needs who are not yet ready for a group setting.

If a district's only preschool special education option is a self-contained classroom, and your child's needs can be met in a more inclusive setting, you have the right to advocate for an LRE that includes typical peers. Conversely, if the district is placing your child in a general preschool setting without the support or services they need, that placement is not FAPE regardless of how inclusive it appears.

What to Do If the Transition Fails

If your child turns 3 and Part B services are not in place — because the evaluation was not completed in time, the IEP was not written, or the district claims it has not received the referral — your child is experiencing a gap in FAPE. This gap creates compensatory education obligations.

Document the gap in writing: the date Part C services ended, the date Part B services were supposed to begin, and the dates no services were received. Request an emergency IEP meeting to put services in place immediately. If the district does not respond promptly, file a WDE state complaint.

The transition process is one area where early, proactive parent advocacy makes the most difference. Waiting for the system to function on its own schedule is how children lose months of services at a critical developmental stage.

For template letters addressing transition delays, compensatory education claims, and preschool FAPE disputes, the Wyoming IEP & 504 Advocacy Playbook covers early childhood scenarios with Wyoming-specific regulatory citations.

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