Clicking on the buttons above will direct you away from the IAAO website. Unfortunately, IAAO will be unable to answer questions regarding the services and products offered via the IAAO-McKissock Portal. Questions and concerns in regards to the on-line USPAP course or any of the other McKissock offerings should be directed to McKissock’s Customer Service staff at 1-800-328-2008. You may also use the Help Tab on the IAAO-McKissock Portal to submit inquiries.