I disagree,

The teacher only has the right to view his history, or view the page he is currently on. Not continue viewing his Facebook, because they are taking advantage of him/her being logged in at the time. Yes, they have access to monitor them remotely, but to monitor, not control and do actions that may harm the user.

Monitoring was only intended to see if the student has been browsing/staying off task.

@Sung: That's a good assumption.

@Rafae: How is downloading relevant to this topic?

Message board assignment