CHERRY HILL, N.J. (AP) — Teachers hurled insults like "bastard," ''tard," ''damn dumb" and "a hippo in a ballerina suit." A bus driver threatened to slap one child, while a bus monitor told another, "Shut up, you little dog." They were all special needs students, and their parents all learned about the verbal abuse the same way — by planting audio recorders on them before sending them off to school.