The kindergarten teacher sent a message to parents saying that the child was a little unhappy at school. How did the parents reply?

Ask the teacher what the reason is first, then deal with it.

If children are unhappy at school, they must be carefully taught and patiently comforted, because this will affect their learning status all day. We can tell children that teachers and parents love children, and studying hard will be of great help to children's future life, study and society. Parents are the biggest spiritual pillar behind children.