When writing a report to the parents of a student of his test score, you would write something like this:
Your son's first math test was on Friday, his score is/was 96%.
"His score is 96%" seems correct, because at the current moment his score is the same 96%. On the other hand, "His score was 96%" seems to be more correct because you're writing about an event in the past, as if you were saying:
He was awarded the score of 96%.
Which is the correct verb to use?