Course Identification Numbering System (C-ID): C-ID is a statewide numbering system that can be used to determine course equivalency between California colleges. If two courses from two different colleges share a specific C-ID number the courses can be considered "equivalent" so that they can be used in lieu of the other college's course to meet college degree, certificate and prerequisite requirements. However, this equivalency does not extend to transfer General Education (e.g., IGETC, CSU GE) or articulation for a major at a university campus. Course articulation for transfer to UC and CSU can be found at ASSIST.org.
C-ID is still relatively new, but continues to grow and expand. CCSF courses that have been approved for C-ID to date are listed at http://www.c-id.net/course_compare.html