almost six million people each year all over the world die because of tobacco related smoking as well exposure to tobacco of other s smoke is significant health hazard . significant part of children and youth are daily expose to environmental tobacco smoke , which influence on their health and increases risk of tobacco related diseases . ( 3 , 4 , 5 , 6 , 7 , 8 , 9 ) . however , tobacco is still the most preventable cause of death which could be successfully reduced by comprehensive tobacco control measures . ( 10 , 11 , 12 ) the world health organization enforced a set of relevant international documents , aimed to support member states in development of national tobacco control interventions . in 2005 , entered into force framework convention on tobacco control which underlines need of protection from smoke exposure . mpower  , as set of tobacco control measures ( 14 ) and further a health policy framework , health 2020 aimed to reduce tobacco related illness , disability and death ( 15 ) . legislation framework of tobacco control measures in the federation of bih is contained in national tobacco control law adopted in 2011 , which ban smoking in public places , schools , health institutions and public transport vehicles . ( 16 ) most part of national tobacco control measures developed based on a document of tobacco control strategy in the federation of bosnia and herzegovina 2003 . ( 17 ) in 2013 , federal ministry of health initiated a new tobacco control strategy drafted in line with who framework convention of tobacco control ( 18 ) smoking is leading addiction disease in schoolchildren and youth in the federation of bih . relevant survey findings indicate early start of tobacco use , with significant increase of smoking prevalence in one grade of secondary schools compare to enrolled grades of primary school ( 19 ) . analysis of exposure to environmental tobacco smoke in school children as a significant indicator for evaluation of tobacco control law enforcement in the federation of bih as well evidence base for recommendations of policy and strategy measures . the analysis involves data collected through two surveys conducted in the federation of bih , during period 2008 -2013 under support of the federal ministry of health and federal ministry of education who authorized the survey . survey is conducted by the institute for public health of the federation of bih as the implementing agency . ( 19 ) for the analysis purpose , exposure to environmental tobacco smoke in school children assessed as a part of multiple - choice questionnaire adapted from a global youth tobacco standard core questionnaire . surveys involves two - stage cluster sample design aimed to enroll students in grades 7 , 8 and 9 of primary and 1 grade of secondary school , with focus on representative sample of children age 13 - 15 . in 2013 , from 6,972-sampled schoolchildren , total 6,415 completed usable questionnaires , of which 5,060 were aged 13 - 15 years with overall response rate of schoolchildren 92 , 0% . data entry and statistical analysis completed with sudaan , a software package used to calculate weighted prevalence estimates and standard errors ( se ) of the estimates ( 95% confidence intervals [ ci ] were calculated from the ses ) . exposure to environmental tobacco smoke ( ets ) at home decreases from over three quarter ( 79.0% ) in 2008 to 62.6% of school children in 2013 who confirmed an everyday exposure to smoke , while 65.1% schoolchildren in 2013 confirmed exposure to ets in all school premises without any difference in sex . a survey finding shows significant decrease of exposure of school children to ets in enclosed public places , from 85.0% in 2008 to 60.7% in 2013 . exposure to environmental tobacco smoke in school children age 13 - 15 , federation of bih 2008 - 2013 . * all public places for 2008 . exposed to tobacco smoke in public place in school children age 13 - 15 in the federation of bih 2008 - 2013 related to significant role of school in development of knowledge , attitude , behavior and health promotion life styles , survey findings indicates decreases of tobacco prevention in school curricula . from two third or 66.2% school children in 2008 taught in school about the dangers of tobacco use decreases to slightly over half of school children ( 54.6% ) in 2013 taught in school curriculum about health consequences of tobacco , more girls than boys . ( figure 2 ) school children taught in school about the dangers of tobacco use , federation of bih 2008 - 2013 knowledge that other people s tobacco smoke is harmful to them increases from 64.6% in 2008 to 69.9% of school children in 2013 , who definitely think other s people tobacco smoke is harmful to their health , more likely girls ( 72.7% ) than boys ( 67.3% ) . however , a survey finding shows some changes in school children attitude related ban of smoking in public places . from over three quarter or 86.6% school children in 2008 who were in favor of banning smoking in enclosed public places , ( table 2 ) knowledge and attitudes towards environmental tobacco smoke among school children age 13 - 15 , federation of bih 2008 - 2013 . * all public places for 2008 . equal to enclosed public places for 2013 . a survey finding shows that exposure to environmental tobacco smoke is significant health risk factor for school children and youth in the federation of bih . exposure to ets at home decrease from 79.0% to 62.1% , ( 19 ) . which is related to recently survey results on high smoking prevalence in adults in the federation of bih ( 20 ) . a exposure to ets in school children at public places decreases from 85.0% in 2008 to 59.8% in 2013 . collected results of surveys performed in the federation of bih compare to neighboring countries shows that exposure to ets at home and public places is lower compare to croatia ( 66.9% at home , 67.9% at places outside their home ) , serbia ( 76.9% at home , 71.9% at places outside their home ) , and higher compare to slovenia ( 41.3% at home , 23.4% at places outside their home ) , czech republic ( 43.0% at home , 45.8% at places outside their home ) , italy ( 48.5% at home , 79.3% at places outside their home ) , hungary ( 43.0% at home , 72.6% at places outside their home)(21,22 ) . a survey results indicates an decreases of involvement of tobacco prevention in school curriculum , from 66.2% in 2008 to 51.8% in 2013 , which is lower compare to surveys results in neighboring countries such as croatia ( 63.3% ) , serbia ( 58.0% ) , slovenia ( 65.3% ) , czech republic ( 64.4% ) , italy ( 59,1% ) , and hungary ( 57.2% ) of school children had been taught about health hazard of tobacco in class during the past year . however , there are some changes in school children knowledge and attitude related tobacco in period 2008 - 2013 . a knowledge of harmful effects of exposure of other tobacco smoke among schoolchildren increases from 64.6% in 2008 to 67.3% in 2013 , which is similar to other countries macedonia ( 67.4% ) , croatia ( 64.1% ) , serbia ( 65.0% ) , and higher compare to slovenia ( 60.2% ) , czech republic ( 63.0% ) , italy ( 61.6% ) and hungary ( 61,5% ) ( 20 , 21 ) collected data confirmed decreases of exposure to environmental tobacco smoke in schoolchildren in the federation of bih , in period 2008 - 2013 as a significant indicator for more effective enforcement of tobacco control law by federal ministry of health . however , survey findings indicates that significant part of school children are still daily expose to ets in all public places , as evidence for more effective enforcement of ban of smoking on public places . promotion of schools as healthy life style environments should be an significant part of tobacco control measures in line with international good practice . in aim to promote awareness and knowledge of school children related to tobacco , there is need for more comprehensive public campaigns as well enrollment of smoking prevention and cessation as a part of curriculum of primary and secondary schools in the federation of bih .