The purposes of this research were to study needs of high school students and teachers on competency-based curriculum integrated with local community for high school students, develop a curriculum based on the needs, implement the developed curriculum, and evaluate the developed curriculum. The samples of the needs study stage consisted of 244 high school students, and 82 teachers in schools located in Ubon Ratchathani, and Warinchamrab Municipalities, gained by quota sampling, and those for the curriculum implementation consisted of 34 high school students studying at Luekamhan Warinchamrab School, in the second semester of academic year 2018, gained by cluster sampling. The research instruments were the developed curriculum, questionnaires for the students and the teachers, a test of English expression, a test of writing, and an attitude evaluation form. The findings revealed the students and the teachers rated their needs on competency-based curriculum at a higher level, the developed curriculum consisted of vision, mission to achieve the students’ competency through the aims, contents, and instructional procedures concentrated on practicing and the evaluation focused on performances, the students had significantly higher learning achievement and writing skills after the curriculum implementation than those before the implementation at the level .01. The developed curriculum was evaluated by the students at medium level of its feasibility.