What Actually Happens During an FBA (and What to Ask For)

If your child's school or provider has mentioned an FBA, you've probably gotten a one-line explanation and a stack of paperwork. An FBA — a Functional Behavior Assessment — is supposed to answer one question: why is this behavior happening? Not "is it good or bad," but what's actually driving it. Once you understand the parts, it's a lot easier to tell whether the one your child got was thorough or rushed.

The four pieces a real FBA should include

A solid assessment usually pulls from more than one source. If any of these is missing entirely, that's worth asking about.

• Interviews — with you, teachers, and anyone who spends regular time with your child. This is where patterns first show up: "it's always worse before lunch" or "only happens during transitions."
• Direct observation — someone actually watching the behavior happen, in more than one setting if possible, and writing down what came right before and right after it.
• Data collection — tracking frequency, duration, or intensity over time, not just a single observation. One bad afternoon shouldn't be the whole basis for a plan.
• A working hypothesis — a plain-language explanation of what the behavior is likely accomplishing for your child. Escape from a hard task, access to something preferred, attention, or sensory input are the usual categories.

What a good hypothesis sounds like

You should be able to read the summary and understand it without a clinical background. Something like: "When asked to transition away from preferred activities without warning, your child engages in [behavior] to delay the transition." If the report only says the behavior is "attention-seeking" with no explanation of how they reached that conclusion, ask what data supports it.

Questions worth asking before you sign off

• How many observations happened, and in which settings?
• What does the data actually show — can I see it, not just the summary?
• What other explanations were ruled out, and how?
• How will we know if the resulting plan is working?

You're allowed to ask for revisions. An FBA is a working document, not a final verdict — if it doesn't match what you see at home, that mismatch is useful information, not something to brush past.