March 7, 2011 8:30 am The Teacher Says: Paul Carleton Elementary School Aditi shows us how one New Jersey school is combining their “PBS” program and gotcha coupons to get students to behave well in the classroom. US & World Videos 0:19 Body of missing kayaker found in the Schuylkill River 2:00 Police officer placed on administrative duty after killing dog that attacked a man 0:51 Police officer shot and killed 1 of 4 dogs that attacked a 53-year-old man 1:49 ‘We have to do better': Philly teen dedicates her Instagram to humanizing victims of gun violence 1:22 Video shows man walk up to ring doorbell with an apparent gun, police say