Windows

http://www.point.ro/vlans.htm
This will give you an example. May be similar to what you need.

Please post back if you have any more problems or questions.

If students have access to a school network I would make it a seperate link that doesn't even get close to the schools administrative network. [meaning the schools network router behind the perimeter router doesn't get traffic from a student lab. Student labs go directly to the perimeter router and then the internet.]

I would look at your federal regs for schools. If students and faculty use school computer resources, all emails and IMs must have a copy made and kept by the school. So those students IMing each other on schools lab computers, or sending out email, you the administrator are responsible to collecting copies of it and storing them. You ought to post a big sign in the lab class that spells this out and a big sign in the faculty lounge.

Here's an except:

Bellingham, MA - BELLINGHAM ? A U.S. Supreme Court ruling requiring school districts to keep track of electronic messages has the technology director at Bellingham High School facing a daunting task.

"We?re looking at a very broad definition of electronic communication, but basically we?re being required to elevate instant messaging and e-mail to the same legal degree as paper," said Kelly Ahrens, the district?s director of technology.

The school district, like all public schools nationwide, is required by an April U.S. Supreme Court ruling to track all electronic information produced by students and employees, including e-mails and AOL instant messages, that occur on school computers, said Ahrens.

link: http://www.wickedlocal.com/bellingham/homepage/8998**5688454160383

Hi, first: choosing Cisco's solutions is the first best step you made. So, you didn't mentioned how many current hosts you need to vlan them, but any way you have to consider the future expantion in your design.
Creating vlans, assigning vlan ports, naming, and configuring trunks between switches are some kind of simple oprations; but the most important step is to determine which servers will have heavy traffic access from which vlans and try to locate these servers in their approciate vlans, doing so you will decrease the propability of consuming your bandwidth across many switches. Otherwise, you could create a new vlan ONLY for servers.

I hope i could give you a hand, so if you found it helpful, its my pleasure.
by the way i'm a Cisco Academy's student at Cairo University, Egypt.
direct contact at: popleeswager@windowslive.com