In MTSS, why is collecting data over time important?

• A. It helps to track growth and intervention effects to inform instructional decisions.
• B. It is only needed for compliance reports.
• C. It replaces teacher judgments.
• D. It should never be shared.

Answer: (A)

In MTSS, collecting data over time through progress monitoring is essential because it shows how a student responds to the supports in place. By tracking performance across multiple occasions, you can see growth patterns, not just a single test result, and determine whether the current intervention is helping. This trend information guides decisions about what to change next—whether to continue, intensify, modify, or switch strategies—and helps set and measure progress toward specific goals. Data over time also supports collaborative, data-driven conversations with families and other professionals, while ensuring instructional decisions are based on evidence rather than a one-off score.