Collegiate secret societies in North America

There are many collegiate secret societies in North America. They vary greatly in their level of secrecy and the degree of independence from their universities. A collegiate secret society makes a significant effort to keep affairs, membership rolls, signs of recognition, initiation, or other aspects secret from the public.

Some collegiate secret societies are called "class societies", which restrict membership to one class year. Most class societies are restricted or limited to senior class members, and are therefore called senior societies on many campuses. Some include junior class members, hence, upperclassmen and women.