This booklet stems from the collaborative effort of a core team led by Roberta Gatti and including Kathryn Andrews, Ciro Avitabile, Ruben Conner, Jigyasa Sharma, and Andres Yi Chang. Chapter 2 of the booklet draws significantly on Andrews et al. (2021). The team is grateful to Michael Crawford for the box on language of instruction; to Melissa Adelman for describing the SDI experi-ence in the Democratic Republic of Congo; to Maud Juquois, Rija Andriantavison, Anna Olefi, and Adria Rakotoarivony for the de-scription of the SDI experience in health/education in Madagascar; to Pamela Mulet for the impacts of SDI data in Niger; to Nicola Dehnen for her contributions to the early stages of the education analysis; and to Sebastian Insfran and Juan Mejalenko for ana-lytical support. Sebastian Insfran also co-authored the technical appendices. Alexander Irwin provided excellent editorial support. Nicola Dehnen and Shuqiao Sun read the draft booklet carefully and provided detailed feedback.