Educational agencies are going through a difficult transition, with important consequences in terms of de-legitimacy of the social mandate historically assigned to the school. The reason for this widespread unease can be traced to the fact that today we live in a complex system. This paper arises within this problematic framework with the intent…

The writer calls attention to the many traps associated with one of the most frequent uses of assessment: the technical difficulties of measuring changes in learning over time. Noting that psychometricians don't like "change" or "difference" scores in statistical analyses because they tend to have lower reliability than the original measures…

School and government officials, system administrators and other policymakers offer a variety of reasons for engaging in high stakes testing: to monitor student performance, to measure teacher and/or school effectiveness, to ensure accountability, etc. Some of these reasons are good; others not. But the best reason--one that is never offered,…