Online Chemistry Placement and Preparation Process (OCPP)

The OCPP Process for Spring 2023 Registration.

Students at Stony Brook University are placed in one of three General Chemistry I offerings as their first chemistry class towards their major. The Department of Chemistry uses the Online Chemistry Placement and Preparation (OCPP) process to not only to place students in the most appropriate course, but also to prepare them for a good performance in the class.

The Spring 2023 OCPP Course is an online process implemented with the Mastering Chemistry software from Pearson. While enrollment in the course is free of charge, it is important to note that after enrollment the student has at most 12 weeks (84 days) to complete the required objective(s) (although in most cases the deadlines set up by Academic Advising will be due before the 12 weeks access code expires).


Spring 2023: Only General Chemistry IB, CHE 131, is offered in the Spring semester. In order to register in the course students must complete the CHE 129/131 Objective of the OCPP. This options is appropriate for freshman, transfer, continuing, and non-matriculated students that satisfy the requirements and corequisites for the courses.

Please notice that you will not be able to register in any of the courses mentioned above until you complete the OCPP work.

  • Freshman students: the deadline for freshman students to complete their OCPP work is January 2, 2023. If you have any questions concerning Academic Advising for freshman students, including problems with satisfying the deadline, please email them at

  • Transfer students: Incoming transfer students needing to work on the OCPP process for Spring 2023 registration will receive an email from their advising office with a specific deadline date. Please watch your Stony Brook email for this personalized email. Please be patient as emails are sent on a first-come, first-serve basis once transcripts are received, reviewed, evaluated, and posted.

  • Continuing students: the Spring 2023 OCPP course closes on January 29 at 11:50 PM. However you should plan finishing the OCPP work well in advance of that date, as it is very likely that by mid-January all seats in the courses will be taken.

Specific instructions for registering in the Spring 2023 OCPP course may be found in the section "Registration Instructions to the Mastering Chemistry Spring 2023 OCPP Course" in the webpage "Guidance and Instructions" selected from the menu at the top of this page.