The purpose of this study was to assess the influence of roles played by student councils on curbing the frequency of student unrests in Public Boys Boarding Secondary Schools in Elgon Sub-county, Kenya. The study was based on Social Systems Theory. The study adopted a descriptive survey design. Stratified sampling technique was used to sample respondents from the categories of students and members of student councils. The target population for students was 750 while that of members of student councils was 78. The study used Likert type Students' Questionnaire and Questionnaire for Members of Student Councils as research instruments. Descriptive statistics namely, means, frequencies and percentages were computed. Inferential statistics derived from ANOVA were used to test hypotheses. The study revealed that there exists a negative, strong and statistically significant relationship between decision making roles played by student councils and the frequency of student unrest (r= -0.809**; p<0.01). Based on the findings of this research study, it can be concluded that if student councils participate in decision making roles played by student councils to school management on other students, frequency of student unrests will be curbed in Public Boys Boarding Secondary Schools in Elgon Sub-county. The study recommends that student councils be thoroughly prepared in their roles through seminars, workshops and regular meetings with the principals.