My colleague’s error consisted of believing that the more testable the material, the more teachable it is. A wider spread of performance in the problem sets and

My colleague’s error consisted of believing that the more testable the material, the more teachable it is. A wider spread of performance in the problem sets and in the quizzes makes the assignment of grades “more objective.” The course is turned into a game of skill, where manipulative ability outweighs understanding. Sounds familiar.