Requirements For Completion
Graduate students often declare their intended degree (master's or doctorate) in their applications. In some cases, master's programs allow successful students to continue toward the doctorate degree. Additionally, doctoral students who have advanced to candidacy but not filed a dissertation ("ABD," for "all but dissertation") often receive master's degrees and an additional master's called a Master of Philosophy (MPhil), or a Candidate of Philosophy (C.Phil.) degree. The master's component of a doctorate program often requires one or two years.
Many graduate programs require students to pass one or several examinations in order to demonstrate their competence as scholars. In some departments, a comprehensive examination is often required in the first year of doctoral study, and is designed to test a student's background undergraduate-level knowledge. Examinations of this type are more common in the sciences and some social sciences, and relatively unknown in most humanities disciplines.
Most graduate students perform teaching duties, often serving as graders and tutors. In some departments, they can be promoted to Lecturer status, a position that comes with more responsibility.
Doctoral students generally spend roughly their first two to three years taking coursework, and begin research by their second year if not before. Many master's and all specialist students will perform research culminating in a paper, presentation, and defense of their research. This is called the master's thesis (or, for Educational Specialist students, the specialist paper). However, many US master's degree programs do not require a master's thesis, focusing instead primarily on course work or on "practicals" or "workshops". Such "real-world" experience may typically require a candidate work on a project alone or in a team as a consultant, or consultants, for an outside entity approved or selected by the academic institution, and under faculty supervision.
In the second and third years of study, doctoral programs often require students to pass more examinations. Programs often require a Qualifying Examination ("Quals"), a PhD Candidacy Examination ("Candidacy"), or a General Examination ("Generals"), designed to ensure students have a grasp of a broad sample of their discipline, and/or one or several Special Field Examinations ("Specials"), which test students in their narrower selected areas of specialty within the discipline. If these examinations are held orally, they may be known colloquially as "orals". For some social science and many humanities disciplines, where graduate students may or may not have studied the discipline at the undergraduate level, these exams will be the first set, and be based either on graduate coursework or specific preparatory reading (sometimes up to a year's work in reading).
In all cases, comprehensive exams are normally both stressful and time consuming, and must be passed to be allowed to proceed on to the thesis. Passing such examinations allows the student to stay, begin doctoral research, and rise to the status of a doctoral candidate, while failing usually results in the student leaving the program or re-taking the test after some time has passed (usually a semester or a year). Some schools have an intermediate category, passing at the master's level, which allows the student to leave with a master's without having completed a master's thesis.
For the next several years the doctoral candidate primarily performs his or her research. Usually this lasts three to eight years, though a few finish more quickly and some take substantially longer. In total, the typical doctoral degree takes between four and eight years from entering the program to completion, though this time varies depending upon the department, thesis topic, and many other factors. For example, astronomy degrees take five to six years on average, but observational astronomy degrees take six to seven due to limiting factors of weather, while theoretical astronomy degrees take five.
Though there is substantial variation among universities, departments, and individuals, humanities and social science doctorates on average take somewhat longer to complete than natural science doctorates. These differences are due to the differing nature of research between the humanities and some social sciences and the natural sciences, and to the differing expectations of the discipline in coursework, languages and length of thesis. However, time required to complete a doctorate also varies according to the candidate's abilities and choice of research. Some students may also choose to remain in a program if they fail to win an academic position, particularly in disciplines with a tight job market; by remaining a student, they can retain access to libraries and university facilities, while also retaining an academic affiliation, which can be essential for conferences and job-searches.
Traditionally, doctoral programs were only intended to last three to four years and, in some disciplines (primarily the natural sciences), with a helpful advisor and a light teaching load, it is possible for the degree to be completed in that amount of time. However, increasingly many disciplines, including most humanities, set their requirements for coursework, languages and the expected extent of thesis research by the assumption that students will take five years minimum or six to seven years on average; competition for jobs within these fields also raises expectations on the length and quality of theses considerably.
Competition for jobs within certain fields, such as the life sciences, is so great that almost all students now enter a second training period after graduate school called a postdoctoral fellowship. In total most life scientists will invest 12–14 years in low paid training positions and only 14% will obtain tenure track jobs (Miller McCune, the real science gap). The average age at which life scientists obtain their first R01 grant to conduct independent research is now 42.
In some disciplines, doctoral programs can average seven to ten years. Archaeology, which requires long periods of research, tends towards the longer end of this spectrum. The increase in length of degree is a matter of great concern for both students and universities, though there is much disagreement on potential solutions to this problem.
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