In the earlier years, "Playing Truant" was the term for skipping school. Nowadays, we just say "Skipping School." So to answer your question, just skip school to play truant.
How you play school with nobody to play it with is easy all you have to do is get a lot of stuffed animals and set them up and play school like you wanted and they don't do anything to change it.
Here are several answers from FAQ Farmers: Tradition, fun, excitement are the reasons that immediately come to mind to explain why Americans play the sports they do. Because society says that they...