myTC is the official app for Teachers College, Columbia University. Access course schedule, grades, events & more. Sign-in once and let your device sign save your login info so you wont need to sign in again. Single sign-on access to all myTC Mobile has to offer: Courses and grades for students; Confluence for employees; Gmail, Calendar, and the Technology Service Desk for everyone with an account. If youre a guest and interested in what TC has to offer, theres no sign-in necessary. Access admissions information, news and more.