We know there is a strong coorelation between out-migration and education levels. I did some research into this a couple of years ago and with the exception of the Alberta Fort McMurray boom - overwhelmingly people who leave tend to be more educated than those who stay in New Brunswick (on average).So if you were to do a full census of everyone who has graduated from New Brunswick high schools and universities over the past 50 years, would the literacy rate among that full group be well below the national average? Maybe - but my hunch would be - based on the data we have on this - that this would not be the case.Illiteracy is an impediment to mobility.
All you regions so concerned about brain drain need to get to work and make sure the children never learn how to read. Problem solved.