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[quote=Anonymous][quote=Anonymous]Found this more detailed description of the Denver system, which is designed by the same team and has been described as the model for the DC system:

http://www.aplusdenver.org/_docs/FINAL_TC%20Letter%20to%20Denver%20Community%20Members.pdf

Can't cut and paste properly, but the algorithm steps are described in page 4 of that pdf.  Key things I took away

The lottery is run for each school, based on the ranking of the students of that school.  So all the students who ranked that school #1 are run through the lottery and randomly assigned.  Then the students who ranked it #2 are slotted in below them, etc.

This also helps:

http://media.nola.com/education_impact/photo/diagram-enrollment-041512jpg-aea0b995c0aa929b.jpg

That's the New Orleans system.  It seems to me to imply a lottery for each school individually.

These are all designed according to the so-called "Deferred Acceptance Algorithm", which goes back to 1962.  It's commonly accepted to be the best way to do this sort of thing.

[/quote]

THANK YOU!!!  I am the poster in the other thread who kept saying it really does matter how you rank and if you rank a highly popular school #2, you are all but out of luck to get in if hundreds of people ranked it #1.  That would be true under the Denver system, which I've also heard common lottery staff mention in talking about how this DC common lottery would run.

And to everyone saying the only differences this year are more schools and it includes the lottery, I'm with the other PP who said unless you identify yourself as an official spokesperson for the Common Lottery, you need to stop spreading misinformation.  For those of us who have spoken to common lottery staff, we may not all be agreeing on what we heard, but one thing we all are agreeing on: the lottery itself will be different this year somehow and your ranking of schools matters more this year than it did last year.  How?  We're all still trying to agree on that.  But it is NOT true that it's the same except for charters included and more schools.[/quote]

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