A woman who graduated Concord-Carlisle High School this year says the school did nothing about a two-year bullying campaign against her that included repeated death threats carved into school walls, smearing feces inside her car and repeatedly keying vulgarities into her car's exterior - once at the local ice-cream stand where she worked.

In a lawsuit filed yesterday in US District Court in Boston, Isabella Hankey charges school officials did nothing to stop the campaign by a group of students who called themselves the Sexy Seven, even after a private investigator and a Web site set up by the family yielded evidence as to the queen bee of the group. In fact, the suit says, a vice principal shredded what few documents he had collected on the case shortly before he left the school.

In the suit, Hankey charges she became terrified of going to school and suffered a blood clot and pulmonary embolism due to all the stress.

The suit describes numerous incidents of harassment. When somebody scratched the word "Cunt" into her bumper, the suit alleges, the vice principal said he would deal with the matter by bringing a blowtorch to school to "cover up" the vandalism. The suit charges school officials said they would bring local police in, then never even contacted them.