Final answer:
The most important issue for a school counselor to consider when selecting an appropriate assessment is its a. purpose.
Step-by-step explanation:
The purpose of an assessment determines what it aims to measure and the information it provides, which is essential in guiding counseling decisions. For example, if a school counselor wants to assess a student's academic abilities, they may choose an assessment that measures cognitive abilities or academic achievement.
Example: If a student is struggling with reading comprehension, a school counselor may select an assessment that specifically measures reading comprehension skills to identify the areas of improvement.
Other factors such as cost, administration time, and grade scaling and reporting are also important considerations, but the primary focus should be on the purpose of the assessment.