How to Request an FBA in Writing: A Step-by-Step Parent Guide

Your child's behavior is escalating at school — suspensions, incident reports, daily phone calls — and you want the school to figure out why this is happening and actually do something about it. You've heard about a Functional Behavioral Assessment. Now you need to make the request official.

There's a reason this needs to happen in writing, and it's not just about documentation. A written request triggers legal timelines, creates an accountability paper trail, and forces the school to either comply or issue a formal written refusal (Prior Written Notice) that you can appeal.

Here's exactly how to do it.

Why Written Requests Matter

Special education law is built around documentation. A verbal request for an FBA can be forgotten, denied later, or simply not acted on without consequence. A written request — via email — does several things:

• Creates a dated record that the request was made
• Starts the clock on the school's response timeline (most states require a response within 60 days)
• Forces the school to formally agree or formally refuse in writing
• Gives you evidence if you later need to file a state complaint or request due process

Always use email for requests like this. It's instantly dated, delivered, and saved. A letter sent by mail is acceptable but harder to track.

What to Include in Your Written FBA Request

You don't need legal jargon. You need to be clear, specific, and documented. Here's the essential structure:

To: Your child's special education case manager (cc the principal)

Subject: Written Request for Functional Behavioral Assessment — [Child's Name]

Body:

I am writing to formally request a Functional Behavioral Assessment (FBA) for my child, [Child's Name], [date of birth / grade level], who receives special education services under an Individualized Education Program (IEP) at [School Name].

I am requesting this assessment because [child's name] has been experiencing significant behavioral challenges at school that are affecting their educational progress. Specifically: [1–3 concrete examples — e.g., "has received 8 out-of-school suspensions since September," "is frequently removed from class due to behavioral dysregulation," "has escalated to physical behaviors during transitions."]

I believe these behavioral challenges may be related to [child's name]'s disability [or: suspected disability, if undiagnosed], and I would like the team to conduct a comprehensive FBA to identify the function of the behavior and inform the development of an effective Behavior Intervention Plan.

Please confirm receipt of this request and advise me of the timeline for completing the assessment. If the district declines to conduct this assessment, please provide Prior Written Notice as required under IDEA §300.503.

Thank you, [Your Name] [Phone number]

Keep it factual and non-confrontational. You're not accusing the school of failure — you're making a formal request with legal standing.

What Happens After You Send the Request

If the school agrees: They'll notify you and begin the evaluation process. You'll receive a consent form to sign before the assessment begins. Read it carefully — it specifies what they're evaluating.

If the school refuses: They must issue a Prior Written Notice. This document must state exactly what they're refusing to do, why, and what evidence supports their refusal. It must also offer other options they considered. A verbal "we don't think that's necessary" is not compliant. Push back in writing: "I need the Prior Written Notice of your refusal as required under IDEA §300.503."

If the school doesn't respond: Follow up in writing after 10 school days. If they continue to be unresponsive, contact your state's special education parent advisory group or file a state complaint.

Understanding Consent and Your Rights During the FBA

Before the school can conduct an FBA as part of an initial evaluation or expanded evaluation, they need your written consent. You have the right to:

• Ask what assessment tools will be used
• Ask who will be conducting the assessment (ideally someone with behavioral expertise, not just a classroom teacher)
• Request that the assessor observe your child in multiple settings
• Ask for a copy of the completed FBA before the IEP meeting where results are discussed

Under IDEA §300.502, if the school completes an FBA and you believe it's inadequate, you can request an Independent Educational Evaluation (IEE) at public expense — meaning the school pays for a private BCBA or behavioral psychologist to conduct a more thorough assessment.

When the School Must Do an FBA Without Being Asked

Even without a parent request, IDEA requires schools to conduct an FBA in these circumstances:

• A student with an IEP is subjected to a change of placement due to discipline (typically once removals exceed 10 cumulative days in a school year)
• An MDR concludes the behavior was a manifestation of the disability — at which point an FBA must be conducted if one doesn't already exist
• The IEP team determines that behavioral issues are impeding the child's learning or the learning of others

If your child hits any of these triggers and the school doesn't proactively offer an FBA, request one in writing immediately.

What a Good FBA Actually Looks Like

Sending the request is step one. When the FBA comes back, you need to evaluate whether it's actually done well. Red flags in a poor-quality FBA include:

• Vague behavioral definitions ("acts out," "disrespectful") instead of observable descriptions ("leaves assigned area, throws materials")
• No clear hypothesis about the function of the behavior
• Observation that only happened in one setting, or for less than 30 minutes
• No ABC (Antecedent-Behavior-Consequence) data collected
• Parent interview not included

A sound FBA uses multiple data sources: direct observation across settings, structured interviews with parents and teachers, and standardized rating scales. It concludes with a clear, evidence-based hypothesis about why the behavior occurs — which then drives the BIP strategies.

The Behavior Support & FBA/BIP Toolkit includes an FBA adequacy checklist that walks you through exactly what to look for when the school's assessment comes back — so you can tell whether what they've produced is defensible or whether you need to push for something better.

If Your Child Doesn't Have a Diagnosis Yet

You can still request an FBA. The Child Find mandate in IDEA requires schools to evaluate children suspected of having a disability — including those whose chronic behavioral challenges haven't yet been explained by a diagnosis. If the school says "we can't do an FBA because there's no diagnosis," they're wrong. The FBA itself is part of the evaluation process that can lead to a diagnosis and eligibility determination.

Write the request. Track the response. Keep the email chain. This is how you build the paper trail that protects your child.