Four days after the school shooting in Connecticut took the lives of 20 children and 6 staff members, classes resumed at most Newtown schools on Tuesday. One school unexpectedly stayed closed after a threat. Sandy Hook Elementary, the scene of the killings, is expected to remain classified a crime scene for weeks, possibly months, but an unused school in a nearby town is being readied for Sandy Hook's students and staff to go back to class next month. At least two more funerals and two wakes were scheduled for Tuesday as the gun-restriction debate revived by the massacre continued.