Dundee-Crown High School administration received an anonymous call Wednesday morning that a threat was made to harm a teacher, District 300 said in a statement. The Carpentersville Police Department responded to the scene and are working directly with the district to investigate the threat. “There’s no ongoing crisis, so the students are taking final exams right now during what’s called a 'shelter in place' as precautionary measure,” District 300 public relations director Anthony McGinn said about 11:30 a.m.