Not concentrated enough.

One of our sons had some extra homework. That is rather unusual for him. I did not understand why and I wrote an email to his teacher. She told me that Pepijn sometime does not concentrate so much and that is why he cannot finish the things he has to finish. He is talking with his friends and laughs about everything and in such moments he is too late with his work. I think we need to talk to him about this. He is very clever and I don’t want that he miss things because he has fun. I hope the teacher will talk with him as well and let’s hope this only happened once.