In large-scale assessments, such as state-wide testing programs, national sample-based assessments, and international comparative studies, there are many steps involved in the measurement and reporting of student achievement. There are always sources of inaccuracies in each of the steps. It is of interest to identify the source and magnitude of…

When STARS reform efforts were launched in 2000, teacher training in assessment was seen as crucial to the success of the program. The STARS reform efforts focus on both supporting the implementation of quality classroom assessment practices and implementing a district-based accountability system. The training programs described in this article…