This report was prepared by an Independent Evaluation Group team led by Giuseppe Iarossi (senior economist) under the guidance of Jeffrey Allen Chelsky (manager until February 2024), Rashmi Shankar (acting manager until June 2024), Birgit Hansl (manager), and Theo Thomas (director) and the overall guidance of Sabine Bernabè (Director General, Evaluation).

The evaluation team included Independent Evaluation Group staff and consultants: Amshika Amar (consultant), Harsh Anuj (data scientist), Susan Caceres (senior education specialist), Roderick L. De Asis (evaluation assistant), Andrea Guerrero (consultant), Kevin Irving (consultant), Johan Lopez (consultant), Cassidy McIntyre (consultant), Azizah Nabitalo (World Bank voice secondee), Hubert Nii-Aponsah (consultant), Felix Oppong (economist and former task team leader), Lourdes N. Pagaran (senior evaluation officer and former task team leader), Estelle Raimondo (methods adviser), Isha Sharma (consultant), Hjalte S. A. Sederlof (consultant), Leonard Sibomana (consultant), Xiaolun Sun (senior evaluation officer), Robin Trinnette Kelley (consultant), Victor Vergara (senior transport specialist and former task team leader), Dileep M. Wagle (consultant), Paul Welton (senior financial management specialist), Maria Virginia Ziulu (data scientist), and Marwane Zouaidi (consultant). Patricia Acevedo, Gaby Loibl, and Esperanza Sadiua provided administrative support. Maximillian Ashwill provided editorial coaching and cowrote the overview. Several Independent Evaluation Group staff provided useful comments and suggestions.

The report was peer-reviewed by Dr. Donald Mmari, executive director at REPOA (formerly Research on Poverty Alleviation Programme Limited), and Simon Gill, director of advisory services, development, and finance at the Overseas Development Institute.

The team is grateful to the numerous representatives of the government of Tanzania, private sector entities, international and bilateral development partners, and nongovernmental organizations and academia who provided valuable insights. The team is also grateful to World Bank Group management and staff who provided valuable information and feedback.