The Rotary Club of McHenry welcomed Michael L. Roberts, Ed. D., McHenry County District 156 Superintendent of Schools, to its Thursday noon meeting, March 13th, at the McHenry Country Club.  Dr. Roberts also brought Eric Blake, Principal of the East Campus High School; and Marsha Potthoff, Principal of West Campus, and introduced them to the club.   The superintendent spoke at length of the many changes in the school education programs but emphasized that the students and their education were the main focus of his administration.  Photo:  Superintendent, Michael Roberts, with Principals Marsha Potthoff and Eric Blake.