Since 2011, the classification "doctor's degree - professional practice" has been used for " doctor's degree that is conferred upon completion of a program providing the knowledge and skills for the recognition, credential, or license required for professional practice." As with the "first professional degree", this classification also requires that the total time in higher education is at least six years, although the requirement for at least two years of college-level study prior to entering the program was removed. The Department of Education does not define which fields professional doctorates may be awarded in, unlike with the "first professional degree". Besides professional doctorates, other professional degrees can exist that use the title of bachelor or master, e.g. B.Arch. and M.Arch. in architecture. In particular, first professional degrees in theology, which did not use the title of doctor, were reclassified as master's degrees in 2011 - including the B.D.