The necessity of controlling the order in which trained essay raters for a statewide writing assessment program receive student essays was studied. The underlying theoretical question concerns possible rater bias caused by raters reading long strings of essays of homogeneous quality; this problem is usually referred to as context effect or…

Statistical equating of scores from direct writing assessments is performed in Maryland to hold the difficulty of passing the Maryland Writing Test (MWT) equivalent from year to year and to allow a demonstration of growth in student writing achievement over the years. Passage of the test is a high school graduation requirement. Prior to…