Explanation
The USGBC administers the LEED credentialing programs, which include the LEED Green Associate and the LEED AP with specialty credentials. The USGBC does not administer the LEED exams, the LEED rating systems development, or the LEED project certification.
References:
The LEED Green Associate Candidate Handbook states that "The U.S. Green Building Council (USGBC) administers the LEED credentialing programs related to green building practice" 1, page 3.
The same handbook also states that "The Green Business Certification Inc. (GBCI) administers the LEED professional credential exams" 1, page 3.
The LEED AP with Specialty Candidate Handbook states that "The U.S. Green Building Council (USGBC) is responsible for the development of the LEED rating systems" 2, page 3.
The same handbook also states that "The Green Business Certification Inc. (GBCI) administers project certification for all commercial and institutional projects pursuing LEED certification under any of the current rating systems" 2, page 3.