Field experiments in education frequently assign entire groups such as schools to treatment or control conditions. These experiments incorporate sometimes a longitudinal component where for example students are followed over time to assess differences in the average rate of linear change, or rate of acceleration. In this study, we provide methods…

We report on the scaling up of a high school content literacy framework, Reading Apprenticeship, over a period of four years as part of the independent evaluation of an Investing in Innovation grant from the U.S. Department of Education to WestEd's Strategic Literacy Institute (SLI). Our goal was to understand the school processes that support…

Recent work that has examined the impact of what are variously called periodic, interim, benchmark, or diagnostic assessments, typically administered three or four times during a school year, has produced mixed findings. For instance, one study reported small significant effects in mathematics in grades 3-8, but not in reading (Carlson et al.,…