Sociology is a mainstream academic field at both the undergraduate and graduate level. Virtually all colleges and universities that have a well rounded liberal arts base will have a course of study in sociology, if not an entire department.
A number of traditional schools have also ventured into distance education and some of them have either sociology courses or entire baccalaureate programs in sociology available online. The University of Colorado at Denver offers a bachelor's degree in sociology through their online education office. This is an alliance of over seventy Illinois colleges and universities that have developed some form of distance learning service. The website will search its database for sociology classes and come up with over ninety course options that can be taken - almost all via the internet - through one of the allied colleges.