quality evidence

A frequent key question for teachers is: “Are we ready to move on yet?” In many classrooms, it might be the case that a teacher asks the class a question; several students put up their hands; the teacher picks one of these students; the student gets the answer correct; and the teacher feels confident that the class is ready to move on. The big problem here is that we are not sure as to whether the other, say, 30 or so students have understood the concept, too. In other words, we have not gathered quality evidence that we are indeed ready to move on.