If a MTSS progress-monitoring trend shows initial gains during Tier 2 but regression after a change in classroom instruction, how should you interpret it?

• A. Wait for the next year to adjust.
• B. Ignore the data and maintain current supports.
• C. Investigate fidelity of implementation, consider concurrent factors, adjust supports, realign with instruction, and monitor progress.
• D. Increase the intensity of Tier 2.

Answer: (C)