Estigoy, Trisha Maye M.2026-09-112026-09-112026-04Estigoy, T.M.M. (2026). Development of worktext in entrepreneurship 12. [Unpublished Master's Thesis]. Don Mariano Marcos Memorial State University – South La Union Campus, Agoo, La Union. Lakasa ti Sirib, DMMMSU Institutional Repository.https://lakasa.dmmmsu.edu.ph/handle/123456789/2508Abstract OnlyThis study addressed the insufficient availability of appropriate instructional materials for Senior High School students taking Entrepreneurship 12 at a National High School in La Union. To improve learning outcomes, particularly on the least mastered competencies, a worktext was carefully developed and designed. The material underwent thorough validation based on content, format, presentation, organization, and accuracy, all of which received high evaluation ratings. Furthermore, readability tests such as Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Score, and Automated Readability Index confirmed its suitability for the target learners. Overall, the findings indicate that the worktext is effective and recommended as supplementary instructional material.enThesis