As for this: (200 according to the admissions director, however EVERYONE I've met who is/was interviewing there got an invite before their secondary, so I'm not sure how accurate that figure was...): The people with the presecondaries are likely to have heard back much earlier due to not having to wait through the completion process, therefore they would schedule their interviews earlier, therefore the people who have interviews early in the process are disproportionately skewed toward people who got presecondary invites.