Which factor should be examined across time in CBM?

The focus on examining intervention effectiveness across time in Curriculum-Based Measurement (CBM) is essential for establishing whether the strategies employed are successful in meeting the educational goals for students. By tracking intervention effectiveness longitudinally, educators can identify trends in a student's progress, determine whether the data reflects positive growth, and assess if modifications to the intervention are necessary.

Continuous measurement allows for timely adjustments to instruction based on the accumulated data, ensuring that the interventions are adequately tailored to the individual needs of the student. This approach is particularly beneficial in a school psychology setting, as it provides insights into which practices foster learning and which may need reevaluation or replacement. This responsive attitude towards intervention helps optimize educational outcomes, making it a cornerstone of effective data-driven decision-making in educational contexts.