@MyAmpleSheep wrote
Education in Cambridge is provided on a university-wide basis, coeducationally. Lectures and exams are provided by the various university departments and not by the individual colleges. A women-only college provides accommodation and pastoral services for women, and (in some cases) tutorials. It's not intended to be a segregated education soup-to-nuts, and I wouldn't support it if it was.
I agree with most of your post, but not “college provides…. (In some cases) tutorials.”
A distinctive feature of Cambridge, Oxford and possibly other universities (Durham?) is that students have weekly one to two (or one to one, or one to a small group) hour-long supervisions (called tutorials or tutes at Oxford). Students can miss lectures but they cannot avoid supervisions.
To check this I’ve just spoken to someone who did Maths as a first degree at Cambridge. She normally did four courses each term, so had four supervisions every week.
Some people make a living acting as supervisors. Work is set in advance (eg essays, or questions for Maths) and discussed in the supervision. College pays for this: if they don’t have a relevant person as a supervisor, perhaps for a course without many students on it, students may go to another college for their supervision but their own college pays for it.
Don’t underestimate the value of a college to a Cambridge (or Oxford) student’s academic education. They are not just the equivalent of a hall of residence + occasional pastoral support at another university.
At Newnham, at least in their first year, a student may be having four supervisions every week, each with a fellow Newnham student, very possibly in a fairly small room with just them and their supervisor. It may be very important to the students that they are both biological women.