The teacher castigated the cheating student to help him correct his behavior.

castigated 是动词 castigate 的过去式，castigate 来自拉丁语 castigare（意为"纠正、惩罚"），在现代英语中表示"严厉批评、斥责"，通常带有希望通过批评使人改正错误的含义。