First of all I would change the students seats and separate them from each other , then I would state again the class policy and elaborate more that chatting during the class is prohibited without taking the teachers permission ; and I would make clear that these kind of behaviors would affect there evaluation\'s marks . I would say : I know that sometimes classes are a little boring especially the lecturing classes , but that is not a valid excuse for student to start chatting with each others because this would not effect them only rather than effecting the whole class because noise is a huge interruption in class . Then I would ask the whole class whether the lecture is getting boring or not . depending to there answers may dismiss the class , convert the class from lecturing into an interaction class , or continue lecturing . By doing this , I will give the class a break from lecturing and change the class mode , then I will ask the two chatting students to continue there chatting out side the class and return to it when there are done in case they were chatting about an important subject to them , or if they were chatting about an important subject that has something to do with the curriculum , they can share it with the rest of the class , I will give them these options in order to show them that I do not hold anything personal toward them 