Harwin, A. (2018, September 06). Here’s What’s Behind the Nation’s ‘C’ Grade on Student Achievement. Retrieved January 16, 2019

When it comes to ranking school quality, one high-profile marker—academic achievement—takes center stage. How much students actually learn, whether they complete their K-12 education, and how states stack up against each other can offer a rough proxy for how well the nation’s public school system is doing its job.

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