Hi Melanie:
You've present some great traits. One could ask, "is it all about curriculum, assignments, points and grades?" or, "are we interested in student learning, knowledge, skills, and applied study that lead to meaningful life and work?"
Student centered then shifts the focus from the teacher or institutional needs, to how can we best teach our students. Of course, we will have to rely on some of the organized methods alluded to above, but we want to be willing to adapt, adjust, modify, and/or create a pathway that leads to positive outcome, as much as a following a fixed process.
Regards, Barry