Gambling is an increasingly a popular leisure activity enjoyeJ by adolescents and adliits.rnMost of those who do so experience few problems associated with gambling (Bilt, I-Iall andrnShaffer, 1997}. However, some studies indicate that adolescents may have more trouble inrncontrolling their gambling behavior than adults (Derevensky and Gupta, 1997). In general,rnthe main objectives of the study were to explore the prevalence, causal factors and impactsrnof problem gambling and gambling behaviors. To do so, the researcher conducted a stuelyrnon students of grades 9 and 10. From 422 students o/grades 9'" and 10''', 307 (181 lIIalesrnand 126 females) were selected through purposive sampling technique.rnTo investigate the causal factors and impacts of problem gambling, the researcher adaptedrnquestionnaire from Gallatin and Rainon (2007), and Derevensky el. ai, (2007). Fol'rndiagnosing adolescent problem gambling the researcher adopted criteria u.led byrnDiagnostic and Statistical Manual/or mental 17ealth1ulIl'lh version (DSM-1V) and CumbiersrnAnonymous (GA}.rnGenerally the study result shows that the prevalence 0/ gambling behavior is estirnmed 10 bern72.75%. Regarding the categories of gambling, probable problem gambling accountsrn(6. 43%}, at risk .lUI' severe problem galllblillg accuunts (38. 92%}, and /fUn -problelllrngambling accounts (54.64%). Regarding the causal/acturs, all the causal factors idellt ijiedrn(psychological, social, biulogical, accessibility of' ga/llbling venues, adwrtisclllellt (Iiirngambling and drug abuse} are significantly correlCllcd to the adolescent galllbling behaviorsrnand problem gambling 011 the DSM-lV and GA at p