As per Joe's comments, when I worked on the railroad, it was generally believed that we got more than our fair share of mentally imbalanced, ditto for my work as a civil servant, where it was generally believed that civil service employed more than its fair share of abberant types--

Just so you don't think it's just me, teacher friends (admittedly mostly from Phila and NJ), feel that the teaching profession gets more than its fair share--I think we have to re-think what the fair share really is--