This paper evaluates the impact of extension of the school day in the context of Brazil's "Mais Educação" Extended School Day Program. Using school level longitudinal data, we find that the program reduces the dropout rates of students in all grade levels, raises the enrollment of students in grades 6-9, but reduces the enrollment of…

Explains a model to analyze direct teaching cost per student at the class level in the final two years of secondary schooling in Victoria, Australia. The model provides predictions for class size and unit cost for each learning area for various enrollment levels. Cost predictions for foreign-language classes were twice that of English classes.…