@Sandhya13 , What type of a preschool does he go to? Is it regular public school, church school or day care setting? Is it 5days/week full time? Couple of things I can think of - (a)Like sokanasanah suggested, speak in both languages - each parent one language. You will be amazed how soon kids up and then at some point you will be struggling to get him to speak in Tamil. Language is the easiest part. (b)Check with the teacher if you can give a few key sentences/phrases in Tamil that she can use to get the kid to do what is required (like 'I want you to listen to me now' when he gets mischievous etc) till he is more comfortable with English. You will be surprised how many are willing to work with you. It may also surprise your son that the teacher can speak his language (c)At the same time, get an understanding of classroom routine and reinforce the same at home - meaning tell the child when teacher says 'circle time' this is what you do etc. Do this for all the chunks of activities. (d)Set an expectation with your son that he is required to listen to his teacher even if you think he is not understanding. I am assuming it is only because the communication seems one way, your son is not responding the way he should. You can't expect a three or four year old to sit in awareness, anticipating his name may be called, he may be required to do something when he is not is actually following what's happening for the larger part of the day. It is natural for him to get lost in what he thinks is important to him. Coming to your husband, now that you know he only speaks in frustration, don't let this get to you. You are the mom. Sometimes you have to be stronger for you and your husband and just keep the goal in mind. Will it help if the teacher instructs in Tamil that he should not run. You can tell her that once he is caught up with English, he might be more engaged in class? You are the parent. I know easier said than done but your tone/body language everything sends a message. See if you can work on that. Don't let him manipulate you (I am not saying this in a negative way please!) Personally I am not a big believer in punishments or rewards but then that is me....that to me feels like negotiating and I feel it is just setting expectations. Think about it and see what you can do. All I will say is accept you are in charge and be firm with both of them when needed Honestly, preschool is such a joyful time. Teachers are more than willing to work with you. See how you can approach them the best to request how they can help you and do what you think is right for your child. I can assure you that you will look back on this and wonder as to why you let yourself get so worked up. It will all be fine. Best wishes.