Updated 20150629 with new version of Screwdrivers script
In most cases you would be able to deploy the Screwdriver across a school by using group policy with the MSI downloadable from http://www.scomis.org/go/hosted
The MSI should remove existing versions of the software, but if you don’t find that works you can use this script instead:
The script can be run manually or temporarily deployed through group policy as a machine startup script.
Scomis takes no responsibility for the use of actions of this script – please thoroughly test in your school before deploying to any number of computers/whole site.