Green Building Education Services (GBES) provides premier exam prep and continuing education for the LEED and WELL Building rating systems. Since 2007 GBES has been the top-selling LEED exam prep resource, offering the most comprehensive and realistic practice tests available. A 95 percent first-time pass rate keeps thousands of satisfied clients including design firms, developers, Fortune 500 companies and USGBC chapters coming back to GBES for training and CE hours. The GBES curriculum is developed and taught by LEED accredited professionals with extensive project experience in multiple rating systems totaling over 50 million square feet of LEED certified space, as well as experience in fundamental and enhanced commissioning, and retro-commissioning.