What strategy for analyzing standardized test results would help a principal decide on continuing a tutoring program?

The strategy involving the comparison of year-to-year changes in scores for participants and non-participants is particularly effective for determining the efficacy of a tutoring program. This approach allows a principal to analyze the specific impact of the tutoring intervention by measuring how students who received tutoring performed compared to those who did not.

The focus on participant versus non-participant scores provides a direct assessment of the tutoring program's effectiveness. If participants show significant improvement compared to non-participants, it suggests that the tutoring program is beneficial and should be continued. Conversely, if there is little difference or if participants performed worse, it may indicate that the program needs to be reevaluated or modified.

Analyzing performance this way provides clear, quantifiable data that can inform decision-making regarding the continuation or adjustment of the tutoring program, unlike the other strategies, which may not isolate the effects of tutoring as effectively.