This study determines the level of acceptability of the respondents on the inclusion of sex education in basic education of public elementary schools of the Department of Education, Bayombong I, Division of Nueva Vizcaya. The data were analyzed using both descriptive and inferential statistics. The analysis employed frequency counts and percentages. Pearson r and t-test, results showed that the teachers and parents had accepted and showed approval to the inclusion of sex education in Basic Education. Younger teachers tend to have higher level of acceptance to sex education than the older teachers in the service. The issue on inclusion of sex education in the basic education between parents across ages was acceptable. There was a perceived difference among the parent and teacher respondents as to the inclusion of sex education to Basic Education.