The URL is https://fc.cps.edu/techcotraining/ 
Despite the https it doesn't require any sign-in
There are three screen-capture narrated animated lessons on mail lists.  "Distributing Mail Lists" is pretty much on point for what you describe Ms. Davis needing.

However, bear in mind this will only work for a FC account with the necessary special permissions.  
Back at https://fc.cps.edu/ they have discussion of a school techco doing this online training then acquiring the toolkit permissions.  I don't know if it would be worth it to Dulles to have Mr. Wood or somebody else invest time into it (for a system that won't last beyond this year) ... but possibly they do.  

==mitch