I'm having a really hard time suggesting what should go here instead, but this doesn't allow for:
<pre>I taught the class (with score 90%)</pre>
Which would mean that I was 90% successful in teaching the class, not that I had received a score of 90% in the class.

Score is still a score, it's still a measure of quality, but it applies to the whole statement, not just the activity. A lot of these sort of statements won't have a % score, but if in the above example I had been assessed on a rubric as I taught, I could very well wind up with a logical % score for that statement.