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 Ph.D. Candidacy Examination ("Candidacy"), or a General Examination ("Generals") designed to test the students' grasp of a broad sample of their discipline, 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.