Most K-12 evaluations are designed to make inferences about how a program implemented at the classroom or school level affects student learning outcomes and such inferences inherently involve hierarchical data structure. One methodological challenge for evaluators is linking program implementation factors typically measured at the classroom or…

The use of standards-based classroom assessments to test English learners' language proficiency is increasingly prevalent in the United States and many other countries. In a large urban school district in California, for example, a classroom assessment is used to make high-stakes decisions about English learners' progress from one level to the…

This project involves the collaboration of researchers with 24 teachers in a study aimed at investigating and improving the vocabulary knowledge and reading comprehension of 4th and 5th grade students for whom English is a second language. Cross sectional and longitudinal data were collected on various aspects of vocabulary knowledge, vocabulary…