They say you don’t know what you don’t know, and that can be a huge risk for a broker. NAR has addressed this issue with a free program and certification called C2EX. It is designed to help brokers and agents discover where their weak points are and where additional education may be needed. You will need to log in using your NRDS number.  If you don't know your NRDS number, you can find it HERE. (C2EX is optional, not required to complete this broker course.)