What do College Interviewers Know About You Before the Interview?

Hi all,
I am planning on applying to Harvard early action and some other top ten schools. Was wondering what information interviewers (especially those for Harvard) know about you before the interview. Do they get a copy of your entire common application, your essays, your transcript, anything?

Thanks.

There are a ton of threads about this. Do a search in the college admissions forum.

It may well vary by college, but in general, they get basic contact information only. They may also get HS attended and intended major. They do not see your application.or essays or transcripts.