Robin Lake, Brianna Dusseault, Melissa Bowen, Allison Demeritt, Paul Hill, via a Deb Britt email:

Charter management organizations (CMOs), nonprofit entities that directly manage public charter schools, are a significant force in today’s public K-12 charter school landscape.
CMOs were developed to solve serious problems limiting the numbers and quality of charter schools. The CMO model is meant to meld the benefits of school districts–including economies of scale, collaboration among similar schools, and support structures–with the autonomies and entrepreneurial drive of the charter sector.
In the late 1990s and early 2000s, the major philanthropies funding charter schools invested heavily in CMOs and similar organizations, spending an estimated total of $500 million between 1999 and 2009. Ultimately, those who invest in CMOs want to achieve a significantly higher number of high-quality schools in the charter school sector. Their investments in CMO growth have been targeted to specific urban school districts that have been considered difficult, if not impossible, to reform.