The objective of this study is to investigate the effectiveness of a counseling program in modifying the negative behavior of male students aged 11-15 years. The researcher used the semi-empirical approach with two measurements, pre and posttest measurements. A purposive sample of 52 students was selected and divided into two groups, experimental and control groups. Each group comprised a number of 26 male students respectively. The researcher developed the behavioral modification and counseling program questionnaire. The study showed that there were statistically significant differences in reducing the level of negative behavior in the experimental group attributed to the counseling program. The experimental group mean reached a score of 87.08 and the control group's mean was 227. The results also indicated that the experimental group has a statistically significant difference for the minimum permissible level of negative behavior (110), where the mean for negative behavior reached 87.08, a decrease of 22.92. The effect of the independent factor on the dependent factor was significant, given that the d-value was 2.07, which is greater than the value 0.8. The study recommended for the group counseling program to be employed and circulated due to its positive results in modifying behavior.