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BCL) as postgraduate awards equivalent to master's degrees, although many postgraduate bachelor's degrees have now been replaced by equivalent master's degrees (e.g. LLM for the LLB at Cambridge and MSc for the BSc at Oxford).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).
Postbaccalaureate program
Postbaccalaureate programs (postbac) are reserved for students who are working toward a second bachelor's degree or a second entry degree. These programs are offered for those who already have a first undergraduate degree. Post Baccalaureate programs are not considered traditional graduate education, but it is more advanced than a bachelor's degree. These programs are offered under the umbrella of continuing education and leads to a second graduate degree. Often first year of the second entry degree is redacted with Postbaccalaureate credentials (PBD). Programs like post-degree diploma, graduate diploma, graduate certificates or a pre-medical to a master's degree in a field such as biomedical or health sciences may come under the range of post-baccalaureate programs. In addition, students with a bachelor's degree, who wish to pursue a master's degree in a field other than their BS/BA degree, may be admitted to a college or university individualized or preset postbac program to earn the necessary entry credits in their new chosen subject. These courses of study are considered as an equivalent blend of foundation year graduate/professional school studies and final year of the specific bachelor's program. This also provides opportunity to those who prepare for changing careers and profession or as a supportive for those interested in continuing education to familiarize with new modalities in their particular fields. The usual length of the programs is 8 months to 1 year and the advanced thesis route grad-entry program is for 2 years.