Sarah Cohodes, Elizabeth Setren, Chris Walters, 22 August 2019

Interventions that succeed in small-scale demonstrations often fail to sustain their effects when scaled up. This column examines the case of an expansion of the successful charter school sector in Boston, Massachusetts. The findings reveal that the city’s charter sector maintained effectiveness while doubling in size, and that organisational practices in the sector may be an important component of its success at scale.

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