When the National Assessment of Educational Progress (NAEP) was designed 20 years ago, comparisons among individual states or localities were not deemed desirable. Today, this lack of information to allow comparison is judged to be a serious weakness of the NAEP, and ways to allow comparisons are actively sought. The focus of this paper is to…

This study is part of continuing research into the meaning of future National Assessment of Educational Progress (NAEP) science scales. In this study, the test framework, as examined by NAEP's consensus process, and attributes of the items, identified by science experts, cognitive scientists, and measurement specialists, are examined. Preliminary…