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Home > Enrollment Center > Registration > Prerequisites and Co-Requisites

Prerequisites and Co-Requisites

What is a Prerequisite?

A prerequisite is a class that must be taken before a student can enroll into another class. (Ex. complete ENGL A100 before being able to enroll into ENGL A101)

What is a Co-Requisite?

A co-requisite is a class that must be taken at the same time as another class. (Ex. BIOL A225 and BIOL A225 lab must be taken as the same time).

  • Prerequisites and Co-Requisites are enforced at the time of registration
  • Students will not be able to enroll into a course that has a prerequisite or co-requisite until the prerequisite or co-requisite requirement has been cleared.

​​​​How to Clear a Prerequisite and Co-requisite

In order to clear a prerequisite or co-requisite you will need to submit a Clearance Request Form and attach the proper documentation (i.e. transcripts, test scores)
that demonstrates you have completed one of the following:

  • College Transcript (Official/Unofficial). Students who have successfully completed a prerequisite course with a C or better from an accredited college or university that is considered an equivalent course at OCC.
    1. A "C-" grade is not a passing grade at OCC and will not be accepted.
    2. Attempting a prerequisite class and withdrawing from the class with a "W" does not meet the criteria for clearing a prerequisite (A "W" is a notation not a grade).
  • Placement Test Scores from another community college. Students have taken English or math placement test scores from a regionally accredited Community College. The test scores must be less than two years old (excludes English as a Second Language ESL).
  • AP Scores. Students who have taken AP tests in English, Psychology and/or Math with a score of 3 or higher. (AP Calculus AB. AP Calculus BC. AP English Literature and Composition. AP English Language and Composition exam. AP Psychology).
    To access your AP results please go to Sign in with your account information or create a new account. Click on the "AP" tab at the top of the page.
  • EAP/ CAASP/SBAC Results. Students who have taken these tests and received the following scores can clear math and English prerequisites: EAP=Ready, CAASP= Status Exceeded, or SBAC English 2682+ or Math 2718+.

Students, who submit a Clearance Request Form and are denied, can challenge a prerequisite based on previous experience or knowledge. Submit a Prerequisite Challenge Form to the respective division office in accordance with the Matriculation guidelines established by the State.

​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.  You can check your registration date by going to MyOCC under Student Tab>Registration Tools>Registration Status & Checklist.


Warning signStudents may submit unofficial transcripts for prerequisite and co-requisite clearance ONLY. Students MUST submit official transcripts if they wish to receive course credit/units towards Degrees, Certificates or General Education Certification (CSU GE Breadth or IGETC).


  All prerequisites and co-requisites in the following divisions will be enforced:

Consumer & Health Science Division    Math & Science           Counseling
Allied Health    Astronomy           Counseling
Cardiovascular Technology    Biology           Learning Skills
Culinary Arts    Chemistry
Dental Assisting    Ecology
Diagnostic Medical Sonography    Engineering
Early Childhood    Geology
Emergency Medical Services    Marine Science
Family & Consumer Science    Math
Fashion    Natural Science
Fashion Merchandising    Ornamental Horticulture
Food & Nutrition    Physics
Food Science
Food Service Management
Hospitality, Travel & Tourism
Human Development
Interior Design
Medical Assisting
Medical Transcription
Neurodiagnostic Technology
Nutrition Care/Dietetic Technology
Radiologic Technology
Respiratory Care
Speech Language Pathology Assistant
Literature and Language    
          Technology               Social Science    
English           Architecture                Economics                            
ESL           AMT                            Geography                            
French           APT                             Philosophy
Hebrew           Electronics                   Political Science 
German           HVAC                          Psychology
Japanese               Manufacturing 
Spanish           Welding
Speech Communication
Business and Computing        Athletics Visual and Performing Art
Accounting         Kinesiology                 Film
Computer Information Systems         Marine Activities         Music
Computer Science Photography