Teenagers are believed the people who are supposed to build the world's future. High-risk behaviors such as addiction to drugs, smoking cigarettes, sex, etc. could significantly hurt teenagers and there must be some supporting programs to reduce these issues as much as possible. This paper performs an empirical investigation to study different factors influencing high- risk behavior among teenagers who live in a city of Esfahan, Iran. The proposed study designs a questionnaire and distributes between two groups of female and male teenagers. The results indicate that while there is a meaningful relationship between high-risk behaviors and average teenagers grades among male teenagers there is no meaningful relationship between high-risk behaviors and teenagers' grades among female students. The results also indicate that there is a meaningful difference between gender and high-risk behavior. The season of birth for female and male students is another important factor for having high-risk behaviors. While the order of birth plays an important role among male students, the order of birth is not an important factor among female teenagers. Finally, the results indicate that teenagers' parental financial affordability plays a vital role on both female and male teenagers.

Iravani, M. (2012). A social work study high-risk behavior among teenagers.Management Science Letters, 2(1), 313-320.

Contreras, J. M., Rhodes, J. E., & Mangelsdorf, S. C. (1995). Pregnant African American teenagers' expectations of their infants' temperament: Individual and social network influences. Journal of Applied Developmental Psychology, 16(2), 283-295.

Cornelius, M.D., Goldschmidt, L., Day, N.L., & Larkby, C. (2002). Alcohol, tobacco and marijuana use among pregnant teenagers: 6-year follow-up of offspring growth effects. Neurotoxicology and Teratology, 24(6), 703-710.

Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297-334.

Locke, T.F., & Newcomb, M.D. (2008). Correlates and predictors of HIV risk mong inner-ity African American emale teenagers. Health Psychology, 27(3), 337-348.

Likert, R. (1932). A Technique for the Measurement of Attitudes. Archives of Psychology, 140, 1–55.

Hedman, L., Bjerg-Bäcklund, A., Perzanowski, M., Sundberg, S., & Rönmark, E. (2007). Factors related to tobacco use among teenagers. Respiratory Medicine, 101(3), 496-502.

Haldre, K., Rahu, K., Karro, H., & Rahu, M. (2007). Is a poor pregnancy outcome related to young maternal age? A study of teenagers in Estonia during the period of major socio-economic changes (from 1992 to 2002). European Journal of Obstetrics & Gynecology and Reproductive Biology, 131(1), 45-51.

Miller, P. (1997). Family structure, personality, drinking, smoking and illicit drug use: a study of UK teenagers. Drug and Alcohol Dependence, 45(1-2), 121-129.

Moolchan, E. T., & Mermelstein, R. (2002). Research on tobacco use among teenagers: ethical challenges. Journal of Adolescent Health, 30(6), 409-417.

Meheus, A. (2000). Teenagers’ lifestyle and the risk of exposure to hepatitis B virus. Vaccine, 18(1), 26-29.

O'Cathail, S.M., O'Connell, O.J., Long, N., Morgan, M., Eustace, J.A., Plant, B.J., & Hourihane, J.O'.B. (2011). Association of cigarette smoking with drug use and risk taking behaviour in Irish teenagers. Addictive Behaviors, 36(5), 547-550.

Sonenstein, F.L. (2004). What teenagers are doing right: changes in sexual behavior over the past decade. Journal of Adolescent Health, 35(2), 77-78.