KRIVET surveyed the operating status of joint curriculum between vocational high schools with a credit system and analyzed their needs, to find ways to vitalize joint curriculums. Vocational high schools with a credit system have tried diverse measures to operate joint curriculum, but their operating plans and support measures need to be more differentiated in tune with the characteristics of each school and area. In particular, it is recommended that administrative support and guidelines be provided to reduce the workload of teachers operating joint curriculums and subject teachers, and that support from related institutions be expanded to help find best practices.