Someone wrote on another site, and this is so true though (from official Columbia website):
"I found out today that although "Columbia University" is included in the name of the School, Teachers College is an affiliate school, and does not have the same status as a Columbia graduate school. Researching further, on Columbia Alumni Association website, it is stated clearly that "Please note that we cannot provide alumni online access to certificate holders, alumni of affiliate schools, current students, faculty, or staff." , or "Unfortunately, this business card service is currently unavailable to alumni of Barnard College, Teachers College, and the Jewish Theological Seminary," or in Alumni Access Page, "Please note we are currently not permitted to offer access to alumni of affiliate schools (Teachers College, Barnard College, Union Theological Seminary, Jewish Theological Seminary, and affiliate programs)." This clearly means that Teachers College are not Columbia alumni. That explains why Teachers College students do not receive Columbia ID cards. Yet, the School lied to students by saying that it is the Columbia School, when even on Columbia's website, Teachers College is listed as an "affiliate school," and not a "Columbia graduate school" as many others. I wonder what happens if current students and Alumni sue the School for defrauding them by lying about what they do not have to sell."
Can someone explain this? If not, TC is really just a Columbia school on papers so the tuition can keep raking in to the Trustees and high-level employees at the detriment of ill-informed students.