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Cindy Crawford rallies against a hidden danger at school

Jaclyn is an Idaho native who currently lives in Milwaukee. Having worked in radio, TV and as a newspaper reporter, she is an avid pop culture and news junkie. She also has a passion for photography and cooking (but is still learning to ...

Cindy Crawford is fighting for children's safety — should you be worried?

Cindy Crawford has a new cause and it involves… caulk? The mom of two is working to raise the best children she can and she talked with NBC News' Maria Shriver on Tuesday to rally against the high levels of PCBs in the window caulking at her kids' Malibu school.

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Crawford and her husband Rande Gerber's children, Presley and Kaia, were supposed to start school this week, but Crawford told Shriver, "I don't feel 100 percent safe."

PCBs can reportedly cause cancer, as well as the possibility of injured immune or reproductive systems, according to E! News. The children's school tested 10 classrooms at random and found that four were over the federal limit for PCBs. However, the air and dust have also been tested, but there have been no signs of elevated PCBs.

Although the school plans to remove and replace the caulk in the four classrooms, Crawford said, "I'm very frustrated and I'm very disappointed at the way this has been handled. The problem is, for me, that they haven't tested the source.

"I think that air testing and water testing are a great piece of the puzzle," Crawford said. "Unless they're testing every day, how do I know that every day it's safe for my kid?"

The former supermodel showed up at a rally last week and she offered to help the school fund the testing.

"I look 10 years down the line. What if my kid, God forbid, had a problem?" Crawford asked, apparently tearing up. "How could I live with myself if I knew that it was a possibility and I still sent them to school there?"

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Although the school is doing what they can, they also said that their school is now safe under federal EPA standards — which the EPA agreed with.

But for Crawford, the issue isn't just her kids' school, but an issue of older schools all across the country. She added, "I just think the laws need to be changed."

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