At the login page, both a student's @ibaldwin.org account and his personal @gmail.com account show.
Although the URL for logging out of gmail is blocked (on the Chromebook, in the browser), we have seen cases where the student was able to log out of their @ibaldwin.org account and log into their personal @gmail.com account. This seems to be a quirk, where the filter occasionally fails to block the logout. In this case the student can be very frustrated, as the filtering will then start working again and he can no longer log out of his @gmail.com account in order to do his work in the @ibaldwin.org account.
To correct this, sign the student out of the Chromebook and restart the power. When it powers on, remove the personal account from the login screen and log in using the @ibaldwin.org account.