On Dec 21, 2006, at 12:05 PM, Cindy wrote:

> Heh.  Fair enough.  Why not just point out any student who
> unsubscribes gets an automatic F in the class?
>
> That should work nicely.
>
> And of course there's no guarantee they'll read the posts, either  
> way :-)

I agree. That's what some instructors here do. The typical philosophy  
is that its the student's job to make sure they receive and READ all  
communications involving their courses. Even so, an easy way to  
prevent changes to a list is to simply have the instructor lock the  
list after the subscriptions are finalized.