Skin Fold

I have to say, the skin fold test that we were required to submit to as 10th graders in Mr. Gunnerson's P.E. class seems a little weird, looking back. And doesn't "Gunnerson" just sound like a P.E. teacher's name? What was the point of the skin fold test? Were we graded on our fat percentage? Does anyone remember? This is stupid because no one reads this, who am I asking?!