Delaware MTSS, RTI, and Child Find: When the School Must Stop Waiting and Evaluate

One of the most common tactics Delaware school districts use to delay formal special education evaluations is MTSS — Multi-Tiered System of Supports. The message from the school sounds reasonable: "We're already providing interventions. Let's see if those help before we pursue an IEP evaluation." Parents sit through tier after tier, quarter after quarter, watching their child fall further behind. Months pass. Sometimes years.

Here is what Delaware law actually says: MTSS cannot be used to delay or deny a special education evaluation when a disability is already suspected.

What MTSS Is — and What It Is Not

MTSS is a framework for delivering tiered instructional support to all students. It starts with universal supports for everyone (Tier 1), adds targeted group interventions for students not making adequate progress (Tier 2), and moves to intensive individualized interventions for students with the most significant needs (Tier 3). The data gathered at each tier informs instructional decisions and can be used as part of a special education evaluation, particularly for identifying specific learning disabilities.

Under 14 DE Admin. Code 925, MTSS data — including the student's response to scientific, research-based interventions — is a legitimate component of the evaluation process for specific learning disability identification. Delaware districts can and do use MTSS data in eligibility determinations.

But MTSS is an input to the evaluation, not a prerequisite. The critical distinction in Delaware regulations is this: a student's participation in MTSS cannot be used as a reason to delay a formal evaluation if there is reason to suspect the child has a disability.

That means if a teacher, a parent, a doctor, or an outside specialist suspects a disability, the evaluation obligation exists regardless of where the child is in the MTSS framework. Tier 2 interventions for two years do not erase the district's duty to evaluate.

Delaware's Child Find Obligation

Child Find is a federal IDEA mandate, adopted and codified in Delaware's Title 14, that requires every school district to actively identify, locate, and evaluate all children with disabilities residing within the district — regardless of the severity of their disability, the type of school they attend, or whether they have previously been referred for evaluation.

Child Find applies to:

• Children in public schools who are struggling but have never been referred for evaluation
• Children in private schools within the district's boundaries
• Children who are home-schooled
• Children who have transferred from another state and bring a prior IEP

The critical consequence of Child Find is that districts cannot passively wait for parents to notice a problem and request help. The affirmative duty to seek out children who may need services rests with the district. However, in practice, Child Find rarely activates without a parent pushing it. If you believe your child has a disability and the district has not initiated evaluation after teacher referrals and documented academic struggles, Child Find is the obligation you are invoking when you put your evaluation request in writing.

How to Request a Special Education Evaluation in Delaware

Submit your evaluation request in writing. Email is acceptable and creates a timestamp. Address it to the Special Education Coordinator or Director of Special Services at your child's school or district.

Your request should:

• Explicitly state that you are requesting a "full and individual initial evaluation for special education services under IDEA"
• Describe the specific concerns that lead you to suspect a disability (reading difficulties, attention challenges, behavioral patterns, speech and language concerns, sensory processing)
• Reference the Child Find obligation if the district has been aware of the child's struggles for some time without initiating evaluation

A sample request looks like this:

"Dear [Special Education Coordinator], I am writing to formally request a full and individual initial evaluation of my child, [Name], currently in [grade] at [school], for special education eligibility under the Individuals with Disabilities Education Act. I suspect [Name] may have a disability affecting [areas]. Delaware's Child Find obligations and 14 DE Admin. Code 925 require the district to evaluate when a disability is suspected. Please send me the evaluation plan and consent form. If the district declines to evaluate, please issue a Prior Written Notice detailing the reasons."

Once you sign and return the consent form, Delaware's evaluation clock starts: 45 school days or 90 calendar days, whichever is shorter.

When the District Refuses to Evaluate

If the district denies your evaluation request, it must issue a Prior Written Notice under 14 DE Admin. Code 926. That notice must explain the reason for the refusal, describe the data the district relied on, and outline the options it considered. It must also describe your rights to challenge the decision.

A verbal "no" without a PWN is a procedural violation. If the district refuses verbally, immediately request the Prior Written Notice in writing: "Please issue a Prior Written Notice explaining the district's reasons for declining to evaluate, as required under 14 DE Admin. Code 926."

A written refusal creates a record — and it triggers your right to request an Independent Educational Evaluation, file a state complaint with the DDOE, request SPARC mediation, or file for due process.

The MTSS Delay Pattern: What It Looks Like and How to Interrupt It

The most common version of MTSS delay looks like this:

1. Parent raises concerns. School says, "Let's put some supports in place first."
2. Tier 2 interventions begin. Quarterly review shows limited progress.
3. Parent asks about evaluation. School says, "We need more data from the intervention."
4. Another quarter passes. Student falls further behind grade level.
5. The school suggests moving to Tier 3 rather than initiating evaluation.

At any point in this sequence, you can interrupt it by submitting a written evaluation request. The district must either evaluate within the timeline or issue a PWN explaining its refusal. The sequence above, repeated over multiple quarters without a formal evaluation, can itself constitute a Child Find violation — a pattern of failing to evaluate a child with a suspected disability.

MTSS data gathered during that time is not wasted; it becomes part of the evaluation record. Requesting an evaluation does not mean abandoning MTSS interventions. Both can and do proceed simultaneously.

If you are navigating the tension between an ongoing MTSS process and a child who clearly needs more support than Tier 2 provides, the Delaware IEP & 504 Blueprint includes the evaluation request template, a timeline tracker for the 45/90-day evaluation clock, and a guide for understanding what MTSS data the district is likely to present at the eligibility meeting.

After the Evaluation: MTSS Data in Eligibility Decisions

When the evaluation is complete and the IEP team meets to determine eligibility, the district will often present the MTSS data as evidence — specifically, whether the student responded to the research-based interventions provided. Lack of response to appropriate, scientific, research-based intervention can support a finding of specific learning disability.

What parents need to watch for at the eligibility meeting: was the MTSS intervention actually research-based and implemented with fidelity? Was the student's lack of progress documented consistently? Were tier-up decisions made in a timely way based on data, or was the student kept in an insufficient tier longer than warranted?

These questions are not just theoretical. If a district argues that a student's poor progress in MTSS shows a learning disability, but the interventions were inconsistently applied or not evidence-based, the MTSS data loses much of its evidentiary weight. Come to the eligibility meeting prepared to ask about intervention fidelity — and document the answers.

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