The International Association for the Evaluation of Educational Achievement's (IEA) mission is to enhance knowledge about education systems worldwide, and to provide high-quality data that will support education reform and lead to better teaching and learning in schools. In pursuit of this aim, it conducts, and reports on, major studies of student…

Examines effects of adaptive instruction on results of 456 children in the first year of reading instruction at 23 Dutch primary schools. Teachers in the experimental group show significantly higher adaptive instructional behaviors (optimizing time on task and using direct instruction and phonics methods) than control-group teachers. (59…

This paper describes the long-term effects of a staff-development program, "Dealing with Multi-Grade Classes," based on selected findings from teaching-effectiveness research in schools with multi-grade or mixed-age classes. The short-term effects were examined in two studies conducted in 1986-87 and 1989-90. In 1992 a follow-up study…

This paper presents the results of a school improvement study (main field test) directed at schools with mixed-age classes in the context of inservice teacher education. A quasi-experimental treatment control group investigation was designed to test the effects of the staff development program "Dealing with Mixed-age Classes," and the…