MPR:

Police in this upscale college town say they’re fighting an unusual heroin epidemic among high school kids.
More than 150 kids are hooked on the drug, Northfield Police Chief Gary Smith said Tuesday. He decided to publicize the problem with a news conference, where he said that as many as 250 current and former Northfield High School students could be involved – some feeding heroin habits of as much as $800 a day.
The epidemic has increased crime and caused consternation in Northfield, one of the most educated and affluent cities in Minnesota, and home to both Carleton and St. Olaf colleges.
“This is affecting our ability to deal with other community concerns,” Smith said. “We find ourselves more often reacting to crimes than preventing them.”
Smith said investigators first caught wind of the problem when crime started spiking, including a doubling in burglaries and tripling in thefts from autos from 2005 to 2006. It led them to the informal heroin ring at the high school of about 1,300 students.