This paper considers the analysis of data from randomized trials which offer a sequence of interventions and suffer from a variety of problems in implementation. In experiments that provide treatment in multiple periods (T1), subjects have up to 2^{T}-1 counterfactual outcomes to be estimated to...

Over the last thirty years, education reform has been a active topic of debate among policy makers and social scientists. The majority of proposals for reform have been based on a combination of regulations and fixed definitions of school - the resources, organization and structure of schools...