This paper examines an increase in upper elementary class sizes in California associated with the K-3 class size reduction program. I also use the variation in fourth and fifth grade class size generated by idiosyncratic first and second grade reductions required to meet program rules to identify a negative impact of larger class sizes on…

The fourth year of the partial immersion program in grades one through four at Key Elementary School (Arlington, VA), where half the day is taught in English and half in Spanish, is reported. Eight teachers and 85 students are involved in the 4 classes. As in other years, the "special" classes (music, physical education, and library) are…

The fifth year of the partial immersion program in grades 1-5 at Key Elementary School (Arlington, Virginia), where half the day is taught in English and half in Spanish, is reported. The annual review, which included classroom observations, student and teacher interviews, student assessment, and parent and staff interviews, revealed a highly…