Vice Principal Pam Joyner tells The Oregonian chaperones have tried everything to prevent the inappropriate contact - lectures, shining flashlights, and even T-shirts that said "No bumping."
Nothing worked. So, teachers at the Portland school are refusing to chaperone the January dance.
The school's special projects coordinator, Jan Watt, says the students dance like people they see on TV.
Some students told The Oregonian grinding is no big deal, but they wouldn't want their parents to watch.