Any educated thoughts as to why ?
No, but the real question is, will anything change with the EA/ED1/ED2/RD system from this year.
There are very few times when I feel ashamed to be a Chicago student. Now is one of them.
Here’s my conspiracy theory 
What if their RD yield was higher than they expected. What if they land up with a really big class size. 1800, even 1900 because on top of the ED crowd a higher bunch of RD kids accepted. First years are guaranteed housing. Maybe they want to see what the housing situation is for second years and upperclassmen to see how many are returning to campus housing. Remember they only have 3,300 beds. They may be scrambling to figure that out before raising alarms about housing shortage among returning students
It isn’t May 1st, they don’t know yield
True, but they have a pretty good idea, as not that many wait until May 1 to commit once they know all of the colleges they have been admitted to.
@CU123, we are waiting to enroll. Depends upon visits to the schools in contention. Still awaiting a merit award decision at one school. My kid won’t enroll until the dust truly settles.
Yes, their are outliers out there, but you and yours are a small minority. JMHO
Why did the Maroon not press them for an answer. Not explaining the decision to delay gives rise to all,sorts of negative inferences. Not smart.
@neweducation What is the prevailing wisdom on campus as to the reasons for this delay?
@Chrchill post #8
I agree completely - this doesn’t paint the school newspaper in a good light either - it looks like shoddy, lazy reporting. Maybe the ad comm had no comment, but at least put that in your article (“when asked to comment or elaborate, the ad comm repeteadly refused to answer any further questions. The Maroon will continue to investigate and will provide updates as we learn them.”).
Again, would it be too grumpy of me to call out both the university AND the student newspaper for some questionable work?
We go so quickly from uber confident observers to skeptics on this board!
Sometimes you have to call it as you see it 
As a person familiar with bad PR/marketing actions, I can tell you this is one of them.
Appears as if they are trying to hide something
Generates more questions than answers
Generates suspicion about motives and integrity
What they should have done is sit down and give a full statement and answer questions. Somebody is flailing at the Admissions office.
I agree completely @denydenzig
When I brought up the lack of public data in other areas (I.e. Chicago not stating what the target class size is) one poster (maybe @ThankYouforHelp ) stated that surely the admin know what they’re doing, and have a sense of their goals.
The current refusal to disclose doesn’t build confidence in the admin, huh?
(Oh, and I bet you that Harvard and Yale aren’t shaking in their boots at all the shenanigans going on in Hyde Park. Quite the opposite I bet - they may use Chicago’s experiment as a cautionary tale of what NOT to do. This is a great way for an admin to lose trust with the public.)
The RD acceptance rate they quoted today at one of the accepted student sessions was 0.5%.
We all agree. This is bad and coming from such a PR savvy admissions operation, it seeems really incompetent.
0.5 percent is the admire of Deferred applicants in th RD around.
The last time prompt admission statistics reporting was in 2014. That year it had a record EA (11K) and a drop of 9.5% total from 2013.
Then since 2015 the official breakdown of EA/RD is totally gone although there are always some unofficial rumors about the stats. The admit rate is absent in March when the RD comes out and the yield rate is reported later than May. You can only get the official admit rate and yield rate in fall from the freshman profile.
I would say in this case UChicago is very unique. People can speculate the reasons behind the move. I would say its behavior has more negative than positive effects.
It wasn’t good then, and it’s even worse now.
Especially with a binding program like ED, it’s bad practice to not disclose info. I think every ED school discloses ED stats. Students should be able to see what the gap is between different options. Yes, the rate may be higher because a certain pool is more qualified, but, all the same, this is info that should be given to applicants soon (not two weeks before the app deadline, if it’s given at all).
Ridiculous.
They should announce the incoming class numbers soon (maybe) which will go along way to solving this riddle.
Has Stanford reported the SCEA/RD breakdown yet? I did not follow it closely but thought it stopped doing that a couple of years ago. I think MIT is truly transparent on that front, and it has not adopted the Common App yet has it?