41 Educational services, namely, conducting classes, seminars, conferences, workshops in the field of mass property appraisal and distribution of training material in connection therewith; developing, arranging, and conducting educational conferences, classes, seminars, workshops and programs and providing courses of instruction in the field of mass property appraisal; providing continuing professional education courses in the field of mass property appraisal; providing training of mass property assessment officials for certification in the field of mass property appraisal; Providing on-line training, namely, classes, workshops, webinars and programs in the field of mass property appraisal