How tests are scored  By - Jul 4, 20:01 PM Comments [1]   David
Kuntz is the Vice President of Research at Knewton, where he
works on perfecting the algorithm for its GMAT prep course.
We’ve received grades all our lives. In fact, we’re so used to
them that we often don’t think very much about what they mean,
or how they are calculated. So today we’re going to look at some
of the different ways in which tests are scored, and at what
those scores mean.  In preschool, we receive grades in the form
of category scores: gold stars, silver stars, or bronze stars.
Sometimes we might get two gold stars, or even three gold stars.
These kinds of grades divide the relevant universe of people
into some small number of categories, usually low-medium-high.
Later on we start to receive simple tally scores: 8/10 or 23/25.
Soon these are represented as percentages: 80% correct, or 92%.
One of the funny things about grades is that by the time we’re
in high school and college, grades have reverted back to
category scores (A,