Drug problems at the nation's schools are getting worse.
That's according to a new survey by Columbia University's National Center on Addiction and Substance Abuse. It finds that more students in high school and middle school are reporting drugs as a problem.
Four in five teens in high school told researchers they've seen someone either using, selling or possessing drugs at school.
Some 13 percent of the teens say they've tried marijuana, with four percent saying they'd used it in the past month.
Joseph Califano, the center's chairman and president says drugs have become so common for teens that the concern about them is lower, and that drugs are now "imbedded in the high school experience."
He describes parents as having an attitude of either denial or despair.
More than 1,000 teens and 550 parents were surveyed between April and May.