Possible for students to video and broadcast the bulletin daily. Netscape used as browser on internet from classes or library. Standard internet tools are also available. U.S. History, Bookshelf, Microsoft Office, etc. These are loaded into server and stations access at will.
Teachers mostly use learning link for Email and little mention of student Email use.
Must go through district anyway so best to convince them. Mac has secure software and other ways to keep users out of the server. It controls the screen so kids can't trash the hard drive, screen, or server. yet learn how to use Mac. I believe an internet firewall is at the district level. Others could be installed if needed.