my son is 5years but he is not socialised in school and he is not playing with other children

A. A lot of kids do not like to mix up so you just have to do regular counselling to the child which will help in encouraging the child to talk to other friends you to tell your child that they will become your friend you have to say School with emoji so try to be more friendly some kids are actually a little in introvert also so they take time but I think positive counselling and effort made by your child and teacher teachers to encourage the child will also help