Student Was Logged Out While Working

My student was unexpectedly logged out of their account while working. Why did this happen?

This is a security feature. This occurs when our site logs users out after a certain time period of what seems like inactivity. We do not put time pressure on our users because we want them to be able to digest our passages to the fullest extent possible, but sometimes this means that users' log-in sessions time out while they are still reading. If this happens to your students, they can simply log back in to pick up where they left off. If a student gets logged out, their progress will be saved.