RTI Cannot Be Used to Delay or Deny Evaluation

The Problem: "We Need to Try Interventions First"

You told the school your child is struggling. You asked for an evaluation. And the school said something like:

• "We need to go through our intervention process first."
• "Your child is in Tier 2. Let's see how they respond before we evaluate."
• "We'll refer for evaluation if the interventions don't work."
• "Our MTSS team hasn't completed the process yet."

If this happened to you, the school is wrong. A parent's right to request a special education evaluation exists independently of any intervention process. The district cannot make you wait.

What the Law Actually Says

Federal Law: IDEA Is Clear

IDEA Section 300.301(b) states that a parent "may initiate a request for an initial evaluation to determine if the child is a child with a disability." There is no prerequisite. There is no gatekeeping process. The right to request evaluation is unconditional.

IDEA Section 300.307 permits states to use Response to Intervention (RTI) as one method for identifying Specific Learning Disabilities. But "may use RTI as part of the identification process" is not the same as "must complete RTI before evaluating." RTI is a tool — not a barrier.

Federal Guidance: OSEP Has Said It Explicitly

The U.S. Department of Education's Office of Special Education Programs (OSEP) issued definitive guidance in a January 21, 2011 memorandum to state directors of special education:

"It would be inconsistent with the evaluation provisions at 34 CFR §§300.301 through 300.311 for an LEA to reject a referral and delay provision of an initial evaluation on the basis that a child has not participated in a process that assesses the child's response to scientific, research-based intervention."

This is not ambiguous. OSEP — the federal agency that administers IDEA — has stated that districts cannot delay evaluation because the child hasn't completed RTI.

The memorandum further clarified:

"The use of RTI strategies cannot be used to delay or deny the provision of a full and individual evaluation ... to a child suspected of having a disability."

California Law: 15-Day Timeline

California Education Code section 56321(a) requires the district to provide a proposed assessment plan within 15 calendar days of receiving a referral for assessment (not counting vacation days in excess of 5 school days). Once the parent signs the assessment plan, the district has 60 calendar days to complete the evaluation and hold the IEP meeting.

California Education Code section 56302 provides that "any parent or guardian, teacher, or other person" may refer a child for special education assessment. The district "may not unreasonably delay or refuse" to conduct the assessment.

The Ninth Circuit: M.M. v. Lafayette

The Ninth Circuit's decision in M.M. v. Lafayette School District, 767 F.3d 842 (9th Cir. 2014) reinforces the parent's right to evaluation data and meaningful participation. While the case primarily addressed the district's failure to share RTI data with parents before the IEP meeting, its broader principle applies here: RTI data belongs to the parents as much as to the district, and the RTI process cannot substitute for the district's evaluation obligations.

The court emphasized that parents are entitled to information that informs the IEP team's decisions — including RTI data. A district that runs RTI without sharing the data with parents, and then uses the RTI results to deny evaluation, has undermined both the evaluation process and the parent's right to meaningful participation.

Why Districts Use RTI as a Gatekeeper

Understanding the district's motivation helps you respond effectively:

Cost: A full special education evaluation costs the district $3,000-$8,000 in staff time and resources. RTI costs far less. Some districts use RTI to reduce the number of evaluations.

Staffing: Districts have a limited number of school psychologists. RTI delays evaluations, spreading the workload over a longer period.

Genuine (but misguided) belief: Some educators genuinely believe RTI should precede evaluation — that it provides useful data and avoids "over-identification." While RTI can provide useful data, it cannot legally prevent evaluation when a parent suspects a disability.

Habit: Many districts adopted RTI-as-gatekeeper practices before the 2011 OSEP memo clarified the law. Some have not updated their policies.

What the District Might Say — and How to Respond

"We need to complete the RTI/MTSS process first."

Your response: "I understand the district uses RTI/MTSS as an instructional framework, and I support good instruction for all students. However, my request for evaluation under IDEA is separate from and independent of the RTI process. The Office of Special Education Programs stated in its January 2011 memorandum that 'the use of RTI strategies cannot be used to delay or deny the provision of a full and individual evaluation.' Under California Education Code Section 56321(a), you have 15 calendar days to provide me with an assessment plan. That timeline started on [date of my request]. Please provide the assessment plan immediately."

"Let's try these interventions and reassess in 8 weeks."

Your response: "The district may continue providing interventions — I welcome that. But interventions and evaluation are not mutually exclusive. They can and should occur in parallel. I am not asking you to stop interventions. I am asking you to initiate a special education evaluation at the same time, as is my right under IDEA Section 300.301(b). Please provide the assessment plan."

"RTI data will help the evaluation team."

Your response: "I agree that RTI data can be useful, and I request that it be included as part of the evaluation data. But the evaluation cannot be delayed until RTI data is collected. The evaluation team can consider whatever RTI data exists at the time of evaluation, along with all other data sources. Please proceed with the assessment plan."

"Your child is responding to the intervention — they don't need evaluation."

Your response: "A child's response to intervention does not determine whether they have a disability. A child with dyslexia may respond to Tier 2 reading intervention and still have a disability that requires specialized instruction beyond what RTI provides. A child who needs 1:1 tutoring to stay at grade level — when peers need no such support — may have a disability that the intervention masks but does not resolve. The question of disability is answered by a comprehensive evaluation, not by an intervention response."

"We'll add your child to the evaluation list."

Your response: "There is no 'list.' Under California Education Code Section 56321(a), the district must provide an assessment plan within 15 calendar days of my referral. The referral was made on [date]. Please confirm that the assessment plan will be provided by [date + 15 calendar days]."

What Happens During the Evaluation

Once you sign the assessment plan, the evaluation proceeds on its own timeline — independent of RTI. The evaluation team:

1. Administers standardized assessments in all areas of suspected disability
2. Reviews existing data, including any RTI data that has been collected
3. Gathers information from parents, teachers, and other relevant sources
4. Produces an evaluation report
5. Convenes an IEP team meeting to determine eligibility

Key point: RTI data may be considered as part of the evaluation — it does not replace the evaluation. The evaluation must include standardized assessments, not just RTI progress monitoring data.

What To Do Next

The Bigger Picture

Response to Intervention is a good instructional framework. It helps teachers identify struggling students early and provide targeted support. Nobody disputes that.

But RTI was designed to improve instruction for all students — it was not designed to be a gate that parents must pass through before their child can be evaluated for a disability. When a school uses RTI to delay evaluation, it is converting an instructional tool into a procedural barrier. And every week of delay is a week your child goes without the comprehensive evaluation and specialized services they may need.

You do not need the school's permission to request an evaluation. You do not need to wait for RTI to run its course. You do not need to prove that interventions have failed. You need to suspect that your child has a disability — and you need to put that request in writing. The law does the rest.