Regular courses may be added after registration for the following semester until the end of the fourth week of the semester. However, students may not add a WRT 105/105E courses after the first two weeks of the semester. In general, it is not a good idea for a student to add a course as late as the fourth week of the semester unless s/he has been attending it. Independent study courses must be added by the end of the third week of the semester. Two-credit courses must be added by the end of the third week of the course. Separate drop/add forms for the fall and the spring semesters are available at, and may be returned to, Lattimore 312. It is always necessary, beginning with the third week of classes, to obtain the signature of the instructor whose course is being added. Freshmen and sophomores who are not yet official majors need the signatures or authorization of their pre-major advisers. Students in the Hajim School of Engineering and Applied Sciences need the permission of their faculty adviser and the associate dean. After the deadline, the approval of the Administrative Committee is also required. A student wishing to add a course after the first four weeks must present a petition with the reasons for requesting a late change to the Center for Advising Services. Approval is not automatic. Students should be urged to decide upon their courses as early as possible in the semester and to discuss their selections with their advisers.