Acknowledgements
We would like to acknowledge the work of A. Jaipal Reddy designing the research activities; all the teams of supervisors and enumerators who arduously mapped and registered women and children; the data entry team who processed all the paper forms; the Sealed Envelope team; Tony Brady and Piotr Gawron for designing the database; Arjun Agarwal and Jitendra Ahirwar for helping develop the content and Nikhil Swaminathan for helping develop the internal measurement systems and processes for STRIPES2. Ketan Verma for helping to develop the midline assessment; Dr Pei-tseng Jenny Hsieh and National Foundation for Educational Research, UK team for helping to develop the endline assessment.