A North Carolina high school student was killed and another wounded in a knife attack Thursday morning, officials said. A “physical altercation” broke out at Northside High School in Jacksonville just after 7 a.m. that ended with two kids slashed or stabbed — and one teacher with minor injuries, cops said at a news conference. A student was arrested in the incident, but police haven’t disclosed charges and are continuing to investigate. Two student resource officers stationed at the school responded, with the first on the scene within 20 seconds, Jacksonville Public Safety Chief Mike Yaniero told reporters. The two...