Parents packed a Northport school board meeting Thursday to find out whether or not there is any mercury levels in the air at Northport Middle School.

According to tests conducted by an environmental firm that was hired by the district, there were no mercury levels detected in the air at the school. However, elevated mercury levels were found outside the school.

"The vapor tests were negative," says Stacey Weisberg, president of the United Teachers of Northport. "We found that out tonight."

Parents say even though levels weren't found in the air they are still concerned. One parent says she is considering home schooling.

MORE: Tests show elevated mercury levels outside Northport Middle School

So far the school has closed three classrooms near where the mercury was found. The school board says students will be moved out of the building if it can be proved that the mercury is indeed causing people to get sick. Some parents think the kids should be moved out of the building regardless.

"Just make sure without any doubt that the building is safe, then bring the children back," says parent Dominick DiGiacamo.

The testing firm also found low levels for pesticides and arsenic by the school's track.

Weisberg says there may be some link to mercury that was used in science classes at the school decades ago.
The testing firm says it is not sure how it's going to get rid of the mercury in the ground.

Officials say anyone who is concerned should go for a blood or urine test.