I think that since kids grow so fast you don't really need to put clothes away to use for next year, because odds are they will be out grown. I like to keep all of the current sizes in the drawers and in the closet, organized by type: sweaters, sweatshirts, tshirts, shorts, pants. This way if the weather changes often you can just grab what you need. I would also recommend keeping a storage container in the closet, this way as soon as you notice that your child has out grown an item you can put it in the storage container so it does not take up space in the drawers/closet.