Rog Lucido: Student Learning Can Only be Described, Not Measured - Living in Dialogue - Education Week Teacher:
In current high stakes test construction each test question is based on a singular standard. For example, let's say that the standard is: "Students will understand the slope of a line." There are an infinite set of questions that can address this standard, but each question will be different from the others or otherwise they would be identical questions. If the test asks five diverse questions on the slope of a line and Mario gets three of them correct we cannot say that his score on slope of a line is three. These are five different questions like adding 1 apple to 1 orange to 1 banana. Three correct answers cannot produce a score of 3. Each question is really a test unto itself and cannot be combined with others. Each question is unique; it stands alone and cannot be added to another unique question.
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