Does the Department of Computer Science permit part-time Ph.D. students?
All Ph.D. students are expected to participate in departmental and laboratory activity full-time on-campus throughout the program, except possibly for summer jobs elsewhere. Therefore, the department does not normally consider admission of part-time students. Furthermore, it does not permit students to participate in the Ph.D. program through the Columbia Video Network. If you are interested in part-time advanced Computer Science studies, you might want to consider the “Professional Degree in Computer Science,” http://www.cs.columbia.edu/education/admissions#prof.