ISSP offers two levels of credentials for sustainability professionals:


Candidates interested earning the ISSP Sustainability Associate (ISSP-SA) credential can register for the exam on a year-round, rolling basis.


Applicants for the ISSP Certified Sustainability Professional (ISSP-CSP) credential exam must first earn the ISSP-SA credential. Only ISSP-CSP Applications that have been submitted after paying the nonrefundable Application Fee will be considered.

For more information, click on the buttons below or check out the credentialing brochure.

Candidate Handbook

The Candidate Handbook contains important information about both the ISSP-SA and ISSP-CSP exams, including the application process, exam policies, and a content outline with sample questions.

Study Materials

ISSP offers comprehensive Study Guides to help candidates prepare for the ISSP-SA exam and ISSP-CSP exam, as well as the ever-popular ISSP-SA Flash Cards to reinforce knowledge of sustainability terminology.

Test Prep Courses

Several ISSP Education Partners offer courses that prepare candidates for the ISSP-SA exam. We recommend all sustainability education and training offerings from our Education Partners.


ISSP offers two levels of certification, a Sustainability Associate (ISSP-SA) level for those new to the field and a Certified Sustainability Professional (ISSP-CSP) level for those who have been working in the field for a while.

Exam Fees

The ISSP-SA costs $175 for members, $250 for partners, and $350 for nonmembers; the ISSP-CSP costs $250 for members, $350 for partners, and $450 for nonmembers.

About the Exam

The ISSP Certification exams are proctored, closed-book, multiple-choice tests that can be taken at a local testing center or online.              A microphone and external webcam are required for online testing.