A study compared the effects of different methods of analyzing trends to illustrate how failure to account for change in classification will lead to misinterpretation of data on the performance of students with disabilities. Data from five years of assessment in Texas is used to illustrate effects of classification changes. (Contains references.)…

The Council of Chief State School Officers has raised some issues pertinent to the implementation of a national project to collect statistical indicators of academic achievement and to compare them across states. The United States Department of Education shares this concern, with an emphasis on sampling schools for a school level analysis which…