Just emailed NUIN (Northwestern) about not getting either a reject or interview invite and she confirmed i was on the waitlist for interview but unlikely to get off waitlist at this point. Probably most people accepted the invite. Hope this helps anyone else waiting to hear from them. Possibly the case for other schools that haven't sent a reject or interview.
Anyone else not have many rejections or interviews yet? I have one interview and one rejection so far and applied to 8. Some of the schools seem to have already sent out rejects or interviews so it seems strange not to have either. Someone earlier said this means you're on a waitlist for interview not sure if that's the case.