It all depends on the school. I know Nova got an early start and began interviewing in July.
Most private schools begin and end later.
If ur a competitive applicant expect to hear beginning in september/october
I applied in May, application finished in June and got all my interviews in September (except for Penn, I got my interview on November 1st...I don't know why, but thats a good sign for the waitlist which I was put on...🙄). So the earliest would be Sept, unless you are talking about Nova which is August I believe.