a little known app contained in the utilities folder is podcast capture
this app links to an XServ( Apple OS X server running Leopard OS X.5) and allows immediate screencapture with voice over
with post processing done by the server and uploaded to your blog or wiki
blog server and wiki servers are included in the Xserv software..all free..all unlimited
a perfect way to host your own content within your school with reduced issues of privacy or copyright comared with publishing live to the rest of the planet.
to my knowledge very few people have set up podcast producer...we have a demo running on a mac mini
it would be recommended to use an Xserv or a mac pro, but a local network could handle reduced traffic
the only requirement is a dedicated server running OS X.5 server