The Activation Key is 6-8 random numbers and letters that are on your ParentVUE Activation Letter that will come from your child's school. You use the activation key when creating your account in ParentVUE.
It is ONLY needed when you first create your account. If you already have an account you no longer need the Activation Key and can log in using the username and password you chose when you created your account. If you do not remember your username or password please see the Forgot Username/Password web page.