The NSA denies that it made such a call to Huntsville, Alabama, but the school superintendent initiated a secret program to monitor students online activity after allegedly receiving a tip from the NSA about students tweeting and posting violent threats on Facebook. The NSA says it has no record that it passed any information to the Huntsville school district, and the description of what supposedly occurred is inconsistent with NSA’s practices. The Alabama school district is not the first school district to spy on students on and off campus.”]