In a multi-tiered system of supports, what data do you review to confirm an intervention is delivered as designed?

• A. Intervention outcomes data.
• B. Teacher preferences.
• C. Student enjoyment.
• D. Intervention integrity data includes fidelity to the protocol and delivery as designed.

Answer: (D)

In MTSS, confirming that an intervention was delivered as designed relies on implementation fidelity, also called intervention integrity. This data shows whether the steps of the protocol were followed, how often and for how long the intervention was delivered (dosage), and the quality of delivery. Knowing fidelity helps you interpret outcomes correctly: if results are not as expected, you can tell whether the issue lies with the intervention itself or with how it was implemented. Outcomes data alone tells you what happened, but not whether the delivery matched the plan. Preferences and enjoyment pertain to attitudes or engagement, not to whether the intervention was implemented as designed. So the measures you want are fidelity/integrity data that capture adherence to the protocol and the delivery as designed.