Schools to face incomplete data in new school year after Common Core testing problems

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Last school year, Common Core-aligned standardized tests marched forward, going from paper-and-pencil to the computer.

But many states had technical issues with the electronic form and weren't able to complete the testing. Others saw an unprecedented spread of refusals.

That means this new school year is starting without complete testing data in many areas.

Officials say the incomplete data should have a minimal impact on students, teachers and districts. In most cases, it will be an inconvenient delay.

States most impacted say they don't expect testing problems next year.