Since PHE projects are adapted to local contexts (including cultural and social norms, as well as local challenges, needs, and priorities), project implementers may find it useful to reflect on the experiences and resources of others in order to glean best practices and new ideas that could be adapted to their local setting. This section of the Toolkit contains guides, training materials, and other implementation resources from past and current PHE projects. The materials in this section are intended to assist practitioners in designing and implementing PHE projects/programs. Some of the topics covered include: developing an integrated theory of change; implementing and training PHE project staff; improving data quality and monitoring and evaluation (M&E) of PHE; and scaling up PHE (both horizontally and vertically, as well as getting institutional buy-in).