At school things are different. In addition to the authority of the teacher, there is some peer pressure. Your son won't want to be the only one who is not cleaning up in his classroom. Classrooms are also more structured with a greater air of rules & rituals. The teacher is probably singing her "clean up" song as she supervises this activity. The home is a more casual environment where your little boy can relax and be himself. In his natural toddler state, he doesn't want to clean up! However, you definitely should continue to encourage him to put away his toys. He needs to learn that tidying up is all part of playing. You'll find him more cooperative if you sing your own clean-up song and if you help him clean up. You can be the "peer pressure" offering a "let's all do this together" kind of support for this activity. Be patient but firm - there is no need to give up! Once he sees that you are serious about this activity, he will cooperate more consistently.  Sarah Chana