This study aimed to design the competencies of Teachers in Charge of the Vocational High School Credit System and to calculate their educational needs, utilizing The Locus for Focus Model for analysis. The research questions set for this study were as follows: First, what are the competencies of Teachers in Charge of the Vocational High School Credit System? Second, what is the educational need for each competency of these operators? Third, what are the priorities of these educational needs? The specific research results are as follows: Firstly, based on the literature review, a total of 31 competencies in 5 areas were identified for Teachers in Charge of the Vocational High School Credit System, which were finally reviewed through expert FGI. Notably, competencies in the curriculum organization and operation area, such as 'Ability to Organize School Curriculum Planning Meetings' and 'Ability to Organize Vocational High School Credit System Curriculum Operation Meetings', were emphasized as crucial. Secondly, across all areas, teachers' current performance levels were found to be lower than the importance of these competencies, with high educational needs identified. Particularly, the 'Introduction Environment Creation' and 'Curriculum Organization' areas showed the highest educational needs. Thirdly, based on the LF model, a total of 10 competencies were identified as top priority for Teachers in Charge of the Vocational High School Credit System, especially in the areas of 'Introduction Environment Creation', 'Curriculum Organization', and 'Career and Life Guidance'. Based on these findings, the recommendations are as follows: Firstly, stepwise training programs should be developed based on the identified competencies and priorities to enhance the capabilities of these teachers. Secondly, differentiated educational training programs should be designed and provided based on the prioritized competencies. Thirdly, detailed support from the Ministry of Education and local education offices is necessary for the successful establishment of the 2022 revised curriculum and the high school credit system. Fourthly, further research is needed on the competencies related to the credit system for vocational high school teachers, tailored to different types of teachers.