Sessions in Teachworks expire at different times depending on the type of user profile that has been enabled for you.
The following session durations apply for periods of inactivity. If there is any activity (i.e. refreshing a page or clicking on anything) the session is reset. The following time durations are the length of each user's session according to their profile type:
Admin - 12 Hours
Staff - 12 Hours
Teacher - 3 Hours
All other profile types - 1 Hour
If you click the "Remember Me" box when logging in you'll automatically be logged in to Teachworks for one month from the date you checked the box before being prompted to login again (if you clear your browser's cookies you'll be prompted to login again).