Funny you wrote this today because I just compiled a list of the Top 20 Chicago Neighborhood Schools on the North Side of Chicago based on ISAT scores. That may not be the best indication of a top school but it is the best way we can objectively compare schools against one another.
CPS does have a school locator at http://schoollocator.cps.k12.il.us/ and there are maps in there. If you know the school you are interested in you can look at its borders.
You can get a copy of my report by opting in at http://homeschicago.info/top-20-schools/.
Because I focus my business on the north side of Chicago, I limited the focus to the north side neighborhoods (not Northwest, West or South) even though there are great neighborhood schools all over the city.
Best of luck to you!
Eric Marcus Real Estate Group
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Are you guaranteed the ability to send your child to a given school or within a given district by living within a particular mile radius, etc.?
Americorp Real Estate
Brokers Associate, e-PRO