The funny thing is some names you can have 2 or 3 in a class and they aren't that common! This year we had 2 Jaspers start kindy - I have never thought that a common name! We also have 2 Poppy's- again not what I would consider common. Last year I had 2 Luca/Luka s in my class.
I do agree with this to an extent. Although not a teacher I use to work in a child care centre and had a few names come throught that I thought were a little different, then there'd be more... And yes I know young girls names Jane, Betty, Elsy, Esme, but not a lot. Thankfully I live in a small town... There are about a 1000 Ava's around, but haven't yet come across a Tiera or a Hadley! Not in Music classes, preschool, kindergym, swimming or mother's group.... So far so good!