Teachers are the most important school resource. In every country, teachers' salaries and training represent the greatest share of expenditure on education; and this investment in teachers can have significant returns. Research shows that being taught by the best teachers can make a real difference in the learning and life outcomes of otherwise…

How to compute and report subscores for a test that was originally designed for reporting scores on a unidimensional scale has been a topic of interest in recent years. In the research reported here, we describe an application of multidimensional item response theory to identify a subscore structure in a test designed for reporting results using a…

Although generally acknowledged as complex and multidimensional, bilingual education, when successful, plays an important role in maintaining and developing bilingualism, resulting in numerous benefits to those who undertake it. This essay will discuss the necessary components and principles of what is required to make a successful bilingual…