fluffydot
Right you are, but I don't think they are that clear... most of them say by invitation only... but I hear of you guys all getting interviews before hearing back about the apps...
Perhaps all my schools are by invitation only and I am just thinking too much. And also I wanted to confirm the term "by invitation only"... that means you DON'T have to request one right?
Then is it possible to get an admit without an interview?

Cornell, Chicago are invitation only. UCLA I believe is not but "strongly suggested", but im not sure.
It makes sense that you get an interview before you hear back about the apps - your interview part of your application process.
So the timeline works like this (generally)
Apply
Wait a few weeks, hope for an interview invite
If you get one, go to the interview
Wait a few more weeks and hope for an accept
I know of no school that accepts without an interview. There may be one or two candidate exceptions due to circumstances, but all schools I've ever looked at report that 100% of admitted students had an interview, so without one you are dead.
GSB goes so far as to set a cutoff date for interviews - if you dotn get an invite by X, you've been denied. Those that make it past X, get to wait one more month to date Y, for a decision. Cornell just invites you, up to the last few days before the decision date. HBS does the same.