Bachelor's degree
Until the 19th century, a bachelor's degree represented the first degree in a particular faculty, with Arts representing undergraduate study, thus the Bachelor of Civil Law (BCL) at Oxford and the Bachelor of Laws (LLB) at Cambridge, for example, were postgraduate degrees. Vestiges of this system still remain in the ancient universities, with Oxford and Cambridge awarding BAs for undergraduate degrees in both arts and sciences (although both award undergraduate BTh degrees through associated theological colleges, and Oxford awards BFA degrees in addition to the BA) and defining other bachelor's degrees (e.g. BPhil, BCL) as postgraduate awards equivalent to master's degrees, although many postgraduate bachelor's degrees have now been replaced by equivalent master's degrees (e.g. LLM for the LLB at Cambridge and MSc for the BSc at Oxford). The same historical usage of indicating an undergraduate degree by it being in the faculty of arts rather than being a bachelor's degree gives rise to the Oxbridge MA and the Scottish MA).
Double majors in the United States
In terms of collegiate experiences, studies have found a number of differences between single and double majors. Compared to their single major peers, double majors appear to be more involved in extracurricular activities, more likely to hold positions in student organizations, and more likely to pursue academic interests (research projects with faculty or honors thesis) outside the classroom. Double majors, on average, have higher GPAs than single majors. In fact, students with GPAs of 3.5 or higher are more than twice as likely to double major. 27% of them even have a minor. Students who expect to go to graduate school are 72% more likely to pursue a double major, and these students are also twice as likely to say they plan on pursuing a Ph.D. than their single major peers. This reflects post-baccalaureate pursuits, as 23.4% of individuals with just bachelor's degrees were double majors, compared to 24.9% of those who have graduate degrees.