The populations listed in this category are the direct recipients of a project's services. That is, they comprise the group trained by the trainer or targeted as the audience for the project's materials. This, students who will directly benefit from their teacher's training are not listed. Similarly, students are not listed if a project's instructional materials consist solely of a teachers' guide. The quantity and quality of resources vary considerably among programs, as do the comprehensiveness and attractiveness of their resource lists.
Some programs offer materials only as a component of their training package.
An abundance of professionally-produced materials does not necessarily indicate the superiority of one project over another that uses different training techniques and has little to sell or give away. In addition, for each project that produces materials, we highlight one or two items warranting particular attention. Please note, however, that we are not recommending certain materials over others, or endorsing specific projects.