Thanks Frank, someone pointed me to the shapefile on NYC Open Data last night. I am trying to join it with standardized test scores to make a map showing performance by zone.
I ended up getting data from the state here:
And there is no UID (there is something called a BEDS code which exists in the state data but not the city's zone shapefile. I spent a whole of time pivoting and manually matching up rows, only to find out that DOE publishes the same data here:
... with a "DBN" field that is ready to be joined to the shapefile.