4. Class Name 101

The first recorded use of an introductory class being designated as “101” was in a University of Buffalo course catalog dated 1929. However, it wasn’t until the early 1930s—when students started regarding a university degree as a means to a better job and schools added more specialized classes to their curriculum—that universities in the U.S. started using digits to identify their courses. Students were also traveling further afield after graduation in search of work, so it became important for a potential employer to be able to compare candidates: Was a passing grade in Cost Accounting 203 at Kent State the same as one in Business Accounting 4 at the University of Michigan?
Eventually, colleges started using a more uniform three-digit designation, in which the first digit indicated the academic level (1=Freshman, 2=Sophomore, etc.). The second digit usually represented a department (English, Science, etc.) and the third the level of the class within the department. These were not hard and fast rules, and still vary from school to school. However, as the three-digit system became more commonplace, it seemed that “101” always represented a basic beginning course, no matter what the discipline. By the late 1960s, the phrase was starting to enter the vernacular at large, outside of the collegiate realm.