Oops. Chicago Public School administrators were apologizing Thursday after a typo in a email to parents sent families to an erotic website.

The message was supposed to direct parents to the Illinois Board of Education website, at ISBE.net. Instead, an errant "L" in the Web address ushered visitors to a "private invite-only space for women over 18."

CPS spokeswoman Becky Carroll said the error was unintentional.

"As soon as it was brought to our attention we sent out a letter with a corrected link, and apologized for any inconvenience it may have cause," she said, according to the Chicago Sun-Times.

The owner of the erotic site told the Sun-Times she did get some new sign-ups from the unexpected surge in traffic.