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1 jan 2009 ano - The Common Core State Standards Initiative, "a state-led effort coordinated by the National Governors Association Center for Best Practices (NGA Center) and the Council of Chief State School Officers," is launched.

Adicionado na linha do tempo:

1998-2017

ByKelsey Prince
14 out 2017

Data:

1 jan 2009 ano
Agora
~ 15 years ago
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