A new Rasmussen poll finds that support for the Common Core standards among American parents with school-age children has dropped dramatically.

The telephone survey of 1,000 adults conducted June 21-22 found that only 34 percent of American adults with children of elementary or secondary school age now favor requiring all schools across the nation to meet the same Common Core education standards, an outcome that Rasmussen observes is an 18-point drop from 52 percent in early November of last year.

According to the survey, 47 percent oppose the controversial, nationalized standards, compared to 32 percent in the prior survey. Of those polled, 19 percent were undecided.

The margin of sampling error of the survey is +/- 3 percentage points with a 95 percent level of confidence.

Jim Stergios, executive director of the Massachusetts-based Pioneer Institute for Public Policy Research, reacted to the new poll.

“Common Core proponents always banked on stealth — on keeping parents from knowing about the Core until it was too late,” Stergios told Breitbart News. “When that didn’t work, they paid for push polls to fabricate a sense of popular support.”

“What’s important about the Rasmussen poll is it’s the first high-quality poll done on the question of support for Common Core,” he added. “And what it tells us is unsurprising: The more people learn about the mediocre quality, the unfunded mandates and the questionable legality of the Core, the less they like it.”