Students accounts need to have the option to delete classes they no longer need to access or class codes need to not be reassigned to new teachers. This is a safety issue. Class codes are being reassigned to a new user when a previous user no longer subscribes. When students log in, they may see a class that is from someone they don't even know, nor the teacher knows. It could be someone from another country. So students can enter a stranger's class lesson if a teacher in their school no longer subscribes and that code is now being used by a new Lumio user. This definitely is something that needs to be addressed ASAP.