INDIANAPOLIS -- As schools across the country deal with the growing trend of "sexting" between teens, Indiana's largest school district moved one step closer to banning the practice Wednesday.

The Indiana Public Schools' Board of Commissioners voted to send a measure on to the full school board that would prohibit students from possessing, viewing or sharing pictures or texts that include sexual content, 6News' Renee Jameson reported.

The ban would include sexting on school grounds, at school events or on school buses.

A national survey showed that 22 percent of teen girls and 18 percent of teen boys have sent sexually explicit messages or pictures over a cell phone.

"I've just heard about friends getting pictures from other people, and they show them off," said teen Ethan Caffey. "So I really just think it's a way for guys to show other girls, and it just kind of degrades the girl."

Kathleen Baldwin, who teaches human sexuality at Indiana University Purdue University-Indianapolis, said that what many teens don't realize is that once the material is out there, there's no way to get it back.

"If you send something to somebody, you can never get it back. You don't know what they will do," she said. "It's illegal. It's child pornography, and there have been some cases where kids have been charged with child pornography."

In March, a Ninevah teen was charged in connection with a party where someone secretly taped a teen girl engaging in a sex act, which was then sent to classmates via text message.

The IPS board will consider the sexting ban at a meeting next month. If it passes, it will be effective immediately.