Prerequisites are enforced at the time of registration. Be sure to clear a course prerequisite before you register to avoid any errors.

Prerequisite and Corequisite Defined

prerequisite is a course that must be taken before you can enroll into another course (e.g. ENGL A100 must be taken before ENGL A101).

corequisite is a course that must be taken at the same time as another course (e.g. BIOL A225 and BIOL A225L must be taken at the same time).

Clearing a Prerequisite and Corequisite

Submit a clearance request form and be sure to attach one of the following to clear a prerequisite for an OCC course:

  • College transcript from an accredited college or university that shows you have completed the equivalent prerequisite course with a "C" or better. Note:  "W" and "C-" or lower will not be accepted under any circumstances.

  • AP Scores  that are "3" or higher. For which AP exams we accept, please refer to the OCC Catalog.

  • High School transcript  to clear prerequisites for foreign language courses, math courses, and/or for placement into CHEM A180.

  Prerequisite Clearance Request


Processing Time:

Please allow  7-10 business days for your request to be processed. We encourage you to submit request before your registration date. Once your request has been processed, you will receive an email.


Challenge Process:

If your Clearance Request form is denied, you can submit a prerequisite challenge form to the  respective division office.   Note: A Clearance form denied due to a grade of "C" or lower cannot be challenged through this process.

  Prerequisite Challenge Form


Questions? Contact us at