FOR Facebook users at a Hasidic all-girls high school in New York it's either Exodus - or expulsion.
Students at the Orthodox Beth Rivkah High School have been ordered to immediately delete their accounts on the popular social-networking site and pay a $100 fine, or be kicked out of the school.
"Girls are getting killed on the internet - that's the reason for it," Benzion Stock, administrator of the Crown Heights school, said.
Stock said Facebook is also off-limits because it encourages girls to violate the Orthodox code of modesty.
"The internet is a good way to ruin marriages and families," Stock said. "We don't want them there, period. It's the wrong place for a Jewish girl to be. Facebook is not a modest thing to do. Socialising on Facebook could lead to the wrong things."
The edict became the talk of the neighbourhood after several 11th graders at the school last week were found to have illicit Facebook pages and were forced to pay the fine.
Chaya Tatik, 17, said she was booted from Beth Rivkah as a ninth-grader for using Facebook and dressing immodestly.
"It's not right that they're keeping them from such a thing," said Tatik, who is now a senior at Bnos Chomesh Academy.
"Everyone uses Facebook. It's a way to communicate. I communicate with my cousins from Israel, who I don't get to see that much.
"Blocking them from using it gives them hatred ... They want to take revenge and rebel. I know because I've experienced it."
Several students and parents noted that a fundraising plea on Beth Rivkah's own website asks followers to "do a mitzvah!" and sign up for Facebook in hopes of winning money for the school.