STUDY: MARIJUANA USE DOESN'T HURT ALL TEST SCORES

SAN FRANCISCO - A new study finds that high school students who smoke
marijuana are likely to obtain lower math scores than their peers.

Scores showed no difference on reading scores between users and those
who abstained from the weed.

The study by the Economist Rosalie Pacula from the public policy group
RAND looked at 6000 standard test scores of those who started using
marijuana after the tenth grade in 1990 and compared with results when
they were in 12th grade in 1992.

Those who started smoking marijuana had 15 percent lower scores in
math than non-smokers but no difference in the reading test, she said.