Every educator knows what “a teachable moment” is. It’s the brief period of time when events serendipitously conspire to teach students something that otherwise might be difficult for them to learn.

Evidence is gathered about student achievement or understanding. The information allows the instructor or learner to alter future instructional steps. It is done to improve learning outcomes (Black & ...

There’s a war of sorts going on within the normally staid assessment industry, and it’s a war over the definition of a type of assessment that many educators understand in only the sketchiest fashion.