The research investigated knowledge management and its efficient use in a community and school cooperative system. The research objectives were threefold: 1) study and synthesize conditional factors which form the criteria for a successful community and school cooperative system. 2) Research and share information on community and school practices which pertain to a cooperative system using knowledge management case-studies in four regions of Thailand. 3) Study and synthesize best practices in community and school cooperative systems in different school and community contexts.
 	The multi-research methodology was employed in the study. The criteria of the study was based around legal document, education Acts and standards of educational quality assurance which were developed and then examined by field expert before being implemented in eight school and communities around Thailand. The study covered both urban and rural communities and accessed both primary and secondary schools. Knowledge management tools were utilized to research and share the practices of community and school cooperative systems. Research and samples taken form eight school and communities assisted in recording and analyzing best practice methods. The researcher then synthesized the best practices for the purpose of knowledge management.
	The results of the study demonstrate: 1) criteria for choosing successful community and school cooperative systems. 2) the practices of communities and schools regarding educational cooperation demonstrated in the sample groups. 3) the processes and best practice methods of successful school and communities and their educational cooperation using different contexts and form which examples were synthesized and recorded for knowledge managament  
