Prerequisites are enforced at the time of registration. Be sure to clear a course prerequisite before you register to avoid any errors. Watch the How to Check and Clear a Prerequisite video to help you get started.
What is a Prerequisite?
A 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).
What is a Corequisite?
A 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 include one of the following:
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
- High School transcript to clear prerequisites for foreign language courses, math courses, and/or for placement into CHEM A180.
Processing Clearance Forms:
Please allow 3-5 business days for your request to be processed. We encourage you to submit the Clearance Request Form well before your registration date. Once your request has been processed, you will receive an email to your OCC student email.
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.