Bob McLennan began ski teaching locally at Gray Rocks in 1960-61. By 1963-64, McLennan was named assistant director of the ski school. A few years later he was assistant to the great and famous Ernie McCulloch at the equally famous Mont-Tremblant ski school. He spent the summers from 1963 to 67 teaching at Mount Kosciusko Australia following a year as ski school director at Belle Neige. In 1966 McLennan was sent to Pra-Loup, France on an exchange program between the French Ski Federation and the CSIA. The technical knowledge gained there was incorporated into the Canadian teaching system. In 1967-69 he was assistant chief examiner for Canada while a member of the technical committee and the board of directors of the CSIA. Five seasons guiding and teaching for a British tour company brought him international experience in the mountains of Austria, Switzerland, Italy and Western Canada. He holds Canadian Ski Instructors Alliance level 4 and Canadian Ski Coaches Federation level 4 certifications.