Harlem Success Academy 1 Has 44% Graduation Rate, 56% Attrition Rate

Eva Moskowitz and her backers like to tout a 100% graduation rate at her schools, but as Norm Scott points out in an Ed Notes piece, it's not a 100% graduation rate when 56% of the students disappear from the school before graduation:

The longer Success Charters are in business, the more they get exposed. This one is big. I'm sure the remaining 32 kids out of the 73 who began 8 years ago are fine. Does anyone know what happened to the 41 kids who were not there to graduate? Would a study of those kids be worthwhile as a check on Success claims of success? They will argue that kids move around in public schools too -- but most end up in other public schools. Did the missing 41 end up in other charters or mostly public schools? And how about this? If Eva's schools are so great an attraction - and we know people choose places to live based on schools - why did they just disappear? We also know that she is allowed wide leeway in the neighborhoods they can draw from. One would expect if parents really found Success such high quality you would see more than 44% stay around. Eva can answer some of these questions by making the data on the missing available - names and number please. (Can someone FOIL this given their claim they are public schools?)

Where did the other 41 children who started first grade at Success Academy 1 with the class that is now graduating go?

And why won't the press take up that investigation instead of just taking Moskowitz's claims of 100% graduation at face value.

When you have an attrition rate of 56% of your graduating class, you do NOT have a 100% graduation rate.