No canned presentation. My company has done this for several schools and lots of businesses.
Security is more of an issue.
You just need more security in a school perhaps even than most businesses. Mainly to keep out accidental damage, but also intentional cracking. There's been a couple of articles in Linux Journal, I think, on use of Linux in schools - not just Samba, but other services. All of the schools seem at least as interested in an internal web server and newsgroups as file sharing.