I don't know if he's happy... then maybe it's right to let him be. Also Kindergarten is fun. They do a lot of fun stuff. My son loved it, he went and played all day! And kids learn stuff from play. It's import for them to develop creativity. I know that sounds loopy. But there have been of hoopla on the importance of play on creative people. Also reduces stress. So maybe it's not such a bad thing if he is not complaining.