Welcome to C-ID.net, the website for the Course Identification Numbering System (C-ID).


C-ID is a supranumbering system being developed to ease transfer and articulation in California’s higher education institutions. To learn more about C-ID, please visit our ABOUT US page. To access FAQs for faculty and articulation officers, please click here.

Currently, C-ID has 479 approved descriptors from over 58 different disciplines. To view C-ID’s finalized Descriptors, or to review Draft Descriptors, please visit the DESCRIPTORS page. Once there, you can select finalized descriptors from a drop-down menu. The Draft Descriptors Review and Comment Area can be accessed by clicking on the View Draft Descriptors link on the Descriptors page.

To access the CSU courses that have been identified by campuses as comparable to C-ID descriptors, use the COURSES tab or https://c-id.net/courses. You can search for courses by discipline or CSU campus.


We are working to ensure all content on this website is accessible. Some of the documents posted are currently being converted to an alternate format. Please contact c-idsupport@asccc.org to request an alternate format or report accessibility barriers.