CHICAGO -- There's a new controversy over popular Web site frequented by teenagers.

A suburban school district is considering new rules that would make students more accountable for what they post on sites like MySpace.com.

NBC5's Anita Padilla said that such sites, including Xanga, FaceBook and RateMyBody.com, are visited by teens in great numbers.

But what goes out on the World Wide Web is up for review by anyone and could come back to haunt them later.

"Kids need to understand that once they put something out on the Internet, they can't take it back. It's out there. And that can be used in the college admissions process, in future employment ..." said a School District 128 spokesman.

The school board in that district is set to vote on a new code of conduct policy that includes specific language about personal postings on the Internet.

That language bars "threatening or intimidating behavior, use of alcohol (and) use of drugs."

Padilla talked with two students from Libertyville and Vernon Hills high schools who helped draft the latest proposal.

"Teachers are going to look at these," one teen said. "If you're going to put in things that you did on Friday night at a party, that's your discretion, but you might have to pay the consequences if someone sees it."

"They would get trouble whether they were doing it online or if they were in another medium and someone told the principal," the other girl added.

School officials said it's more about prevention than punishment, and what they hope to do is open the lines of communicating between the parent and the student. But there were some students in the district who say this is an invasion of their privacy.

"Not all of those pictures may be true. Someone may look like they're holding a beer and really it's just like, I don't know, they have those sodas that look like beers and stuff like that," a male high student told Padilla.

But while school officials admit that they won't be policing or surfing the Web for postings, they do say cases brought to their attention will be investigated thoroughly to determine if the photos and blogs are not only offensive, but also authentic.

District 128 board members will vote on the code of ethics policy revisions next Monday.