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.

Corrected: An earlier version of this study incorrectly described the 1998 study by Paul Black and Dylan Wiliam. It is a literature review. If you ask five teachers what formative assessment is, ...

Ed. note: Today’s students have too many tests to take—but today’s teachers still need insight into their classes’ knowledge and skills. Adding new tests every time students need to prove mastery ...

Timed written examinations continue to dominate university assessment. In most professions, the need to recall and write down specific information from memory under timed conditions is rare. Yet every ...