This study aimed to determine the relationship between professional learning communities and teachers\\\' efficacy and students\\\' performance. It employed the descriptive survey method of research. A total of 564 secondary school teachers in a certain school in Laguna Philippines from twelve public secondary schools were selected using stratified random sampling technique. A valid two-part survey questionnaire was utilized as instrument in gathering data needed for the study. Respondents assessed professional learning communities in terms of critical elements, human resources and structural conditions. Teachers\\\' efficacy was measured in terms of continuous improvement program, gender and development, small learning action cell session and learning action cell session while student achievement was measured in terms of their mean percentage scores in the quarterly test. Tests of correlation showed that professional learning communities and teachers\\\' efficacy exhibited no significant correlation. A significant relationship was observed between professional learning communities and students\\\' academic achievement as well as between teachers? efficacy and students? achievement.