“…To collect data for the case studies and address the study's three focus areas, in the summer of 2017, I gathered documents related to the development, piloting, field testing, and scale up of each of the seven sample KEAs. Documents can serve as useful sources of qualitative data (Yin, ), particularly when analyzing legislation based education policies (Gibton, ) or tracking changes over time (Bowen, ). The documents I used included RTT‐ELC annual progress reports, technical reports, research briefs, newspaper and peer‐reviewed journal articles, KEA administration manuals, state administrative memoranda, and presentations (see the appendix).…”