It may be necessary to delete login profiles from a Chromebook or Chromebase. Reasons could include the profile has become corrupt, we need to force an update out to an app on the Chromebook or you just want to clean up the chromebook because the student will no longer use the chromebook.
Since everything is stored in the cloud, there is no danger of the user losing their information when the profile is deleted.
Steps:
If not already on, turn on chromebook - sign out any user that might be currently logged in.
Select the tile on the desktop area of the Chromebook - in the upper right you will see a small select arrow appear in the top right of the tile.
Click the select arrow and then select "Remove this person"
Video demonstration here
https://drive.google.com/open?id=0B2KvUjwK7AbOMkdSREozR0pLUUk