You compared the results of student benchmark scores to those obtained on the end-of-year assessment because you would like to know how well benchmark scores can forecast future performance on the assessment.  What is the phrase that describes the statistical concept that you measured?

You compared the results of student benchmark scores to those obtained on the end-of-year assessment because you would like to know how well benchmark scores can forecast future performance on the assessment.  What is the phrase that describes the statistical concept that you measured?