Many parents notice changes in their child's behavior after daycare. A child who is calm and cheerful in the morning may become clingy, emotional, quiet, hyperactive, or irritable after coming home. Some children cry more, have tantrums, refuse to cooperate, or suddenly seem exhausted. This can leave parents wondering, “Is something wrong at daycare?” or “Why is my child acting so differently?” In many cases, behavioral changes after daycare are a normal response to a busy d