What type of data is most likely to be used to evaluate the effects of an academic intervention developed through consultation?

• A. Standardized achievement tests
• B. Teacher rating scales
• C. Curriculum-based measurement (CBM)
• D. IQ testing

Answer: (C)

Curriculum-based measurement is the best choice because it provides frequent, direct data on how the student is performing on the exact academic skills the intervention targets. By using brief, curriculum-aligned probes administered regularly, you can detect small, meaningful gains and track progress over time, enabling quick data-based decisions about continuing, modifying, or stopping the intervention. Standardized achievement tests are too infrequent and not tied to the specific goals of the intervention; teacher rating scales are subjective and may not reflect actual skill growth; IQ testing measures general cognitive ability rather than progress in targeted academic skills.