PROFICIENT: Hall-Dale High School students work on a geometry lesson Thursday in Kendra Guiou's clas
PROFICIENT: Hall-Dale High School students work on a geometry lesson Thursday in Kendra Guiou's classroom in Farmingdale. The entire school district has adopted proficiency-based education, a new education model. (Photo by Andy Molloy/Portland Press Herald via Getty Images)

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493004305
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Portland Press Herald
Date created:
March 15, 2012
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Portland Press Herald
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