An observational study of 12 mixed-age and 12 single-age Dutch primary reading/language and mathematics classes revealed that time-on-task levels were lower for the mixed-age classes. However, no significant differences in achievement test scores were found. (IAH)

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…

A quasi-experimental, treatment-control group investigation was designed to test the effects on Dutch primary school teachers of the staff development program "Dealing with Mixed-Age Classes." Research findings from mixed-age classes, effective teaching, and classroom management and organization were translated into teaching behaviors.…

Investigated how students and teachers in mixed-age classes spent their learning time during reading, language arts, and mathematics. No significant differences between single- and multi-aged classes was found. Concludes that teachers found working in mixed-age classes very difficult, with most working as if they were teaching two different…

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…