Invalidated test scores spark concern for Oklahoma school districts

BY ANDREA EGER - Tulsa World Modified: August 21, 2013 at 11:08 pm •  Published: August 22, 2013

Local school district leaders say a lack of detailed information about the Oklahoma Department of Education’s decision to invalidate some standardized test results from last spring is just adding to their questions and concerns about the state’s new testing vendor, CTB/McGraw-Hill.

On Tuesday, state...

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