The study explored on the financial resource management challenges faced by school heads in public secondary school in Kwimba district Mwanza Tanzania. Specifically, the study sought to identify the role of school heads in managing financial resources, their preparedness, the challenges faced by school heads in managing financial resources and to suggest possible strategies for effective management of financial resources. The Budget Theory was applied to shape the study to the problem faced school heads and the data were collected. The study employed mixed method approach through convergent parallel design and applied questionnaires and interview guide in data collection from 104 respondents in Kwimba District in Mwanza. The main findings specified that, financial management challenges include lack of training, lack of accountants or bursars, poor budgeting and poor and irregular auditing. Thus, employing school accountants, training school heads, involvement of teachers, proper budgeting, regular provision of seminars, and transparency in financial expenditure and regular auditing may enhance to effective financial management in public secondary schools. Therefore, the study recommends that the government should employ internal auditors at the level of pubic secondary schools to secure public funds, qualified school accountants, trained school heads, school heads observation to proper budget planning and transparency in financial expenditure may greatly promote to financial management. School heads should also observe the inclusion of teachers in financial decision matters in schools for common decision making because are the core in the schools, these intended to improve and contribute to effectiveness and appropriate in managing public funds and be applied only for the benefit of the schools in Kwimba district and Tanzania at large.