This research investigated the effect of motivation of teachers on students discipline within public boarding secondary schools. The study utilized descriptive research design and correlation design with a mixed approach. The study included a total population of 145 individuals, consisting of 8 administrative staff members, 4 representatives from the parent s committee, and 133 teaching staff from public boarding secondary schools in Rulindo district, the researcher determined the sample size of 107 respondents using Yamane formula. The results indicate 88.8% strongly agreed that Teachers are provided with support to attend in service courses, seminars and workshops, 87.8% strongly agreed that Equitable methods and procedures are employed in the promotion of teachers, 79.6% strongly agreed that Opportunities and incentives or additional studies are extended through offers, 61.2% strongly agreed that The society acknowledge the importance of teacher, 84.7% strongly agreed that Teacher salaries are proportionate to their workload. Study indicates that 58.8 % of strongly agreed that Improved punctuality Indicate of students discipline, and 76.5 % of strongly agreed that Team player Indicate of students discipline, 73.5 % of strongly agreed that Respectful behaviour Indicate of students discipline, and 77.9% of strongly agreed that Students Cleanliness Indicate of students discipline61.8 % of strongly agreed that Consistence attendance Indicate of students discipline and 58.8% of strongly agreed that Adherence to school rules & guidelines Indicate of students discipline. Results revealed that Teachers Motivation Factors Have a Positive Significance with Student s Discipline since the p-value are less than 0.05, underscored a positive relationship between teachers ‗motivation and students discipline. The study recommends that school administrators should improve teacher incentive strategies if they want to see the improved performance that comes from having disciplined students. Head teachers should work to develop new teacher motivational tactics and even bolster those that already exist in order to establish discipline among the students and improve performance. The government through the Ministry of education should certify that teachers are given better compensation for them to convey excellently. In addition, the government and management ought to support paid study leave for educators so they can advance their qualifications, expertise, and abilities and ultimately provide high-quality education.