More Jittery Schools

This one in suburban Chicago:

Schaumburg High School was ordered evacuated this afternoon, apparently after rumors surfaced that someone planned to plant a bomb there Friday, a threat believed to be tied to both the 8th anniversary of the Columbine High shootings and the massacre at Virgina Tech earlier this week.

The evacuation took students by surprise because it came about two hours after officials announced over the school's public address system that police and dogs would search the building after school for "suspicious materials" as a precaution.

Nerves are frayed and short, understandably.