How to Dispute a Learning Disability Evaluation You Disagree With

Your Right to Disagree

Under IDEA (34 CFR §300.502), parents have the explicit right to disagree with a school district's evaluation. Disagreeing isn't confrontational — it's a built-in part of the special education process. The law anticipates that parents and schools will sometimes reach different conclusions from the same data, and it provides a specific mechanism for resolving that disagreement: the Independent Educational Evaluation.

But before you get to that step, there's a lot you can do with the evaluation data you already have. Many eligibility denials are based on broad composite scores that mask subtest-level deficits, arbitrary score cutoffs that IDEA doesn't require, or incomplete analysis that ignores parts of the evaluation the school found inconvenient.

Step 1: Get the Full Report

Schools sometimes present evaluation results as a summary table at the IEP meeting without providing the full written report in advance. Request the complete written report at least five business days before any eligibility meeting as a practical request, not as an IDEA deadline. Under IDEA, the public agency must provide parents with a copy of the evaluation report and eligibility documentation at no cost (34 CFR §300.306(a)(2)); that provision does not set a five-business-day lead time. You need time to review every subtest score, read the evaluator's qualitative observations, and compare the data against what you know about your child.

If the school gave you a summary at the meeting and asked you to sign an eligibility determination on the spot, you are not required to sign immediately. Tell them you need time to review the full report and will respond in writing within a reasonable timeframe.

Step 2: Challenge Composite-Level Conclusions

The most common basis for denying SLD eligibility is a broad composite score in the Average or Low Average range. "Broad Reading is 89 — Low Average but within normal limits." This dismissal ignores the architecture of composite scores.

Composites average together multiple subtests. A Broad Reading composite of 89 could mean:

• Letter-Word Identification: 102 (Average)
• Passage Comprehension: 94 (Average)
• Word Attack: 71 (Low — 3rd percentile)

The 71 on Word Attack — pure phonetic decoding — is the score that explains why the child can't read independently. But it's buried inside a composite that looks almost-average because two other subtests pulled it up.

Write a letter to the IEP team specifically requesting that eligibility be considered at the subtest level, not just the composite level. Cite the composite scores alongside the subtest breakdowns and ask: "Does a Word Attack score at the 3rd percentile, masked by an Average composite, indicate adequate reading skills?"

Step 3: Apply Confidence Intervals

Every standard score has a margin of error. A reported score of 85 at a 95% confidence interval might span a true score range of 79 to 91. If the school is using 85 as an informal cutoff ("not low enough"), point out that the child's true score could be as low as 79 — firmly in the Low range.

Ask the evaluator to state the confidence interval for every subtest score used in the eligibility decision. If any score's lower bound falls below the threshold the school is applying, document that in writing.

Step 4: Question Norm Selection

Schools choose whether to score achievement tests using age-based norms (comparing to same-age peers) or grade-based norms (comparing to same-grade peers). For a child who has been retained a grade or is old for their class, the choice of norms can shift scores by 5 to 10 points.

If the evaluator used age norms for a child who was retained, the child is being compared to younger peers with less instructional exposure — artificially inflating scores. Request that the evaluator report both age-based and grade-based scores and explain why they selected one over the other. If the alternate norming approach would produce scores that support eligibility, document the difference.

Step 5: Request an Independent Educational Evaluation

If you disagree with an evaluation obtained by the public agency, you may request one Independent Educational Evaluation at public expense for that evaluation. Under 34 CFR §300.502, the agency must, without unnecessary delay, either ensure the IEE is provided at public expense or file a due process complaint to show that its evaluation was appropriate. They cannot simply deny the request.

An IEE is conducted by a qualified evaluator who is not employed by the school district. The evaluator administers their own chosen battery (often a different test — WIAT-4 if the school used the WJ, or vice versa — to provide an independent comparison), writes their own report, and presents their own eligibility conclusions.

The school must consider the IEE results, though they are not bound to accept them. But an IEE that contradicts the school's findings creates a paper trail that strengthens your position in any further dispute.

Step 6: Document Everything in Writing

To make a clear written record of your disagreement, follow up after every meeting about an eligibility decision with a letter or email that:

• States your disagreement with the determination
• Lists the specific scores, confidence intervals, and norm-selection issues you raised
• References the legal provisions you're relying on (IDEA, 34 CFR §300.502, state regulations)
• Requests specific next steps (IEE, reconvened meeting, additional testing in specific areas)

This written record becomes critical if the dispute escalates to a state complaint or due process hearing.

The Achievement Test Decoder includes a meeting question planner and a composite masking detector worksheet designed specifically for the situation where you're walking into an eligibility meeting ready to challenge the school's interpretation of your child's scores.