Abstract: This study seeks to assess the contribution of UmwalimuSaving and Credit Cooperative (Umwalimu Sacco) on socio-economic development of teachers in Rwanda. Specifically the study was guided by the following objectives: to assess the contribution of saving on Umwalimu Saccothat increase the socio-economic development of teachersin Rwanda; to examine the impact of loan/credit provided by Umwalimusocio-economic development of teachers in Rwanda and the last determine the importance of teachers’ cooperatives supported by Umwalimu Sacco on socio-welfare -economic development of teachersin Rwanda.