Closing a tab for My Baker, Blackboard, or any other Baker web application WILL NOT log you out of SSO.
Logging out of My Baker or Blackboard will log you out of SSO for the CURRENT application, but will not log you out of the OTHER applications.
Once logged out of an application, you will need to login again to SSO for that application.
To be completely logged out of SSO, you must close your web browser. This is especially true if you are using a public computer.