This study aimed at determining the prevailing ideology and supervisory belief orientation of the public elementary school administrators as part of the school culture in the schools division of Iloilo to establish the existence and significance of their relationship to administrative productivity. This decsriptive-correlational research employed Harrison's Organization Ideology Questionnaire, Glickman's Supervisory Beliefs Inventory, and Productivity Inventory. The first two instruments were pilot tested for factor analysis among 31 respondents in the school district of San Miguel, Iloilo, the results of which showed construct validity for all items based on factor loads that ranged from 0.410 to 0.845. Precisely 138 elementary school principals and head teachers participated in this investigation, randomly selected through cluster sampling of the 52 districts comprising the five congressional districts of Iloilo. These school administrators were grouped according to school type, size of enrollment and teaching staff, age, educational qualification, and administrative and teaching experiences. Statistical tools used were mean, standard deviations, the t-test, the Stepwise Multiple Regression Analysis, and the Pearson's are set at .05 alpha level. Study results showed that the school administrators were task oriented in organization ideology and collaborative in supervisory belief orientation which typify the kind of school culture existing in the management of public elementary schools in Iloilo. The school administrators, however, obtained very low productivity level. Categorically, they differed significantly in productivity when grouped according to school type, size of enrollment and teaching staff, educational qualification, and administrative experience. School type, size of enrollment and teaching staff, and educational qualification were the best predictors and correlates of productivity. Not one of said variables could significantly predict, or correlate, with the ideology and supervisory belief orientations of the school administrators. No significant relationship existed among the ideology orientation , supervisory belief orientation, and productivity of the school administrators. This pointed to a strong, cohesive school culture which was not fully exploited to generate high productivity. Thus, the study suggested for the redirection of focus in the educational practices of the public elementary schools in the school division of Iloilo, a complete revision of the existing qualification standards and criteria for evaluation of schools and personnel, and an equitable allocation of facilities among the public elementary schools to achieve high quality and productivity in basic education.