Twins

[Trina]

At the school I am in, we have 3 sets of identical twins and 2 sets 
of fraternal twins.  We're in a small town and the school is 
Kindergarten - 3rd grade with about 687 students total.  Plus, one of 
the 1st grade teachers has a set of identical twins.

In the town I grew up we had quite a few twins, both identical and 
fraternal.  In my graduating class alone (aproximately 242 kids in 
the class) there were 3 sets- 2 fraternals and a set of identicals.  
And there were a few more in the other 3 classes.  

So I am not all that surprised that Hogwarts (JKR pop 1000 kids) has 
at least 2 sets of twins.  I'm just surprised it isn't more.

Trina