When my oldest son was in Kindergarten I didn't see one piece of art work all year. Then in June he brought home a folder bigger than him full of all the art he had created that year. I was overjoyed looking through it.
I wasn't sure what to do with it, so we hung it in his closet at first. Then he finished 1st grade and brought home an even bigger folder of art. So we took down the art in his closet and hung the new pieces.