When students post their faces, personal diaries and gossip on Web sites like Myspace.com and Xanga.com, it is not simply harmless teen fun, according to one Sussex County Catholic school principal.

It's an open invitation to predators and an activity that Pope John XIII Regional High School in Sparta will no longer tolerate, the Rev. Kieran McHugh told a packed assembly of 900 high school students two weeks ago.

Effective immediately, and over student complaints, the teens were told to dismantle their Myspace.com accounts or similar sites with personal profiles and blogs. Defy the order and face suspension, students were told.

While public and private schools routinely block access to noneducational Web sites on school computers, Pope John's order reaches into students' homes.