And in the second, how can you test children that aren't supposed to exist?

Tested American children with cancer have high levels of strontium-90 in their baby teeth.

Cost is not the main reason for the failure to test children, health officials say.

The federal law, he said, presses schools to test children who were once overlooked and there are no plans to change it.

Connecticut currently tests children in Grades 4, 6, 8 and 10.

He said that the groups were prepared to sue other states as well if they refused to begin testing poor children.

But some educators say assurances from state officials will not make them feel better about testing such young children.

Learn whether you can test children for food allergies in this article.

Beyond that, she said, testing children and then not acting on the results is wasteful.

"We would be testing children as if the results had meaning for their treatment," he says, "and there is insufficient evidence that it does."