"We realize at first this may seem odd; however, it is a practice that would catch an intruder off guard," she wrote in the letter, published by TV station WHNT in Huntsville.
"The canned food item could stun the intruder or even knock him out until the police arrive," Holley wrote. "The canned food item will give the students a sense of empowerment to protect themselves and will make them feel secure in case an intruder enters their classroom."
Russian mission control has lost contact with a satellite full of geckos slated to participate in a weightlessness experiment, in the latest setback for the country's space industry.
The Photon-M satellite and its reptile crew will probably be lost and fall from orbit in a few months unless specialists can re-establish communications with it, a source in the space industry told Interfax news agency. The four female and one male gecko on board will die from hunger within two and a half months or earlier if the craft's life-support systems are also disrupted, the source said.