The ACLU of Western Mass says parents of Northampton High School students deserve answers. The Daily Hampshire Gazette reports that two days after a threatening note was found at the school, teachers distributed a pledge against violence to all students. The pledge reportedly asked students to support school safety and help prevent threats. Students say they were not forced to sign it, but ACLU attorney Bill Newman, who hosts a radio show here on WHMP, wants to know what teachers were told about the pledge by administrators, and whether students were misled about its purpose. Northampton Police Captain Scott Savino is quoted as saying police used the pledge to gather handwriting samples as part of their investigation into the threat.