Thacher supports a wide variety of clubs and related organizations. Some, such as Thacher Pack and Spur, have been active for well over a century. Others wax and wane as different students come through the School, bringing their own interests, passions and expertise to the community. Currently, about 20 active clubs meet regularly; they are open to every member of the School. Some of the popular clubs at Thacher: United Cultures of Thacher (discusses issues of diversity), the Sir Winston Churchill Debate Society (prepares debates about national and world events), language clubs (Spanish, Chinese, French), the Film Society (watches and critiques different types of films), the Mad Bomber Ski Society (plans trips to areas within driving distance). Any student may form a new club with the approval of the Dean of Students.