Support for Common Core among Americans with school-age children has fallen dramatically, as more now question whether the new national education standards will actually improve student performance.

A new Rasmussen Reports national telephone survey finds that just 34% of American Adults with children of elementary or secondary school age now favor requiring all schools nationwide to meet the same Common Core education standards. That’s an 18-point drop from 52% in early November of last year. Forty-seven percent (47%) oppose the imposition of the national standards, compared to 32% in the previous survey. Little changed are the 19% who are undecided. (To see survey question wording, click here.)

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The survey of 1,000 Adults was conducted on June 21-22, 2014 by Rasmussen Reports. The margin of sampling error is +/- 3 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC. See methodology.