It's apparent they were working from data derived only from birth records, not cross referenced against any other data. It seems to me that competent data mining and cross checking of simple public records could have avoided this situation.
My niece is autistic and although she is of the appropriate age, given her developmental conditions, she will never attend college or even high school.
Instead of celebrating the marginal improvements in my niece's abilities as she grows, my family gets "innocent" calls from people that remind them of just how far behind her peers she really is.
If you work in the data mining field you need to remember how even simple failures or sin's of omission can effect others.