What criteria may indicate that a child has mastered a skill according to instructional standards?

The indication that a child has mastered a skill according to instructional standards is best represented by achieving a certain level of success across multiple trials. In this case, achieving 80% success across 3 trials or 100% success over 2 trials provides a reliable measure of the child's ability to perform the skill consistently and reliably. This dual criterion ensures that mastery is not just a one-off performance but reflects a sustained and repeatable capability.

The choice focuses on quantifiable performance metrics, which are essential in educational and therapeutic settings. These metrics allow educators and therapists to assess skill mastery with clarity, minimizing the variability that could arise from a singular success or an isolated performance instance. Consistency in performance indicates that the child has integrated the skill into their repertoire effectively and can apply it in various contexts or situations.