and she'll be followed by professors rachel grena and professor stanton from ucsf. >> hello, supervisors. thank you. for 20 years the san francisco unified school district has worked to reduce addiction to nicotine products. the school district is making considerable progress with the declining use despite marketing almost entirely focused on young people starting up. as you heard before me, the speaker in front of me, the new surgeon general report indicates that almost all current adult smokers began speaking as teens, 87% of adult smokers began by the age of 18. in san francisco we are seeing the emergence of a new problem in e-cigarette use. between 2011 and 2013, the center for disease control and prevention found that in 2011 4.7% of teens were using while the next year of 2012 10% of high school students were using. we are very concerned about this growing trend of young people smoking e-cigarettes. e-cigarettes are being used on our campuses he [speaker not understood] acting to address this new challenge. the san francisco board of education is working to develop and extend [spe