Practice Makes Perfect is a community site aiming for creating an environment for anyone who wants to practice themselves at anything.
Feel free to test yourself at the topics already added, or add new topics and questions for others to learn from.
Letting your students practice questions you and other people added, will free you from the need to create the same assignments over and over again, and from looking for new questions for them.
Take tests built by questions others added, or add new topics and questions to help your friends and future classes practice whatever it is that you're learning. (Writing questions will also improve your understanding!)