MADISON, Wis. -- A new survey shows Wisconsin teens aren't smoking marijuana as much as in previous years.

The study, done by the state Department of Public Instruction, said 34 percent of high school students admit smoking pot once in their life -- that's down from 43 percent in 2001.

The study reported 19 percent of teens said they smoked marijuana in the past 30 days. That number is down from 25 percent in 2001.

The study was part of a Youth Risk Behavior Survey.

The same survey reports teenagers are using their seat belts more often.

The survey reported only 15 percent said they rarely use their seat belts, which is half the number of teens who reported rarely using their seatbelts in 1993.

Nearly one-out-of-four students reported riding in a car with a driver who has been drinking alcohol. That was down from 39 percent in 1993.

Nine percent reported driving a car after having drunk alcohol. That's down from 15 percent in 1993.

The survey of more than 2,400 students in 57 public high schools was done in the spring. The state survey is part of a larger national effort to study risky behaviors conducted by the U.S. Centers for Disease Control and Prevention.