Unless strong assumptions are made, nonparametric identification of principal causal effects can only be partial and bounds (or sets) for the causal effects are established. In the presence of a secondary outcome, recent results exist to sharpen the bounds that exploit conditional independence assumptions. More general results, though not embedded…

This study examined differences in grade school students' BMI percentiles before and after the "Healthy, Hunger Free Kids Act" of 2012 and factors that may have influenced those differences. Using publically available data from the Pennsylvania Departments of Health and Education, a comparative analysis of BMI percentiles, ethnicity,…

This paper describes a national statistics-oriented project-based learning activity, which has been delivered annually for five years in Australia and the outcomes of a particular collaboration of this initiative with the discipline of environmental sustainability. The national initiative engages primary- and secondary-school students from varied…

We examined effects on child development of a group-based parenting support program ("Educación Inicial" - EI) when combined with Mexico's conditional cash transfer (CCT) program ("Prospera," originally 'Oportunidades" and "Progresa"). This cluster-randomized trial included 204 communities (n = 1,113 children in…

This paper investigates the validity of a national, standards-based teacher evaluation programme by examining the relationship between teachers' evaluation results and their students' learning progress. We used census achievement data that assessed the same cohort of students at the end of 8th and 10th grade. We applied multilevel modelling and…