AIBU teachers don't like nicknames?

[mummamali]

AIBU at school, they insist on calling children by their full names. My primary aged children-Tobias, Noah, Willow, Feodora, Cecilia, Skyla, Xander- Like to be called by their nn (Toby, Ceci, Feo, Skye, Xander) however the school has decided to make all the teachers call them by the real names. I see this as a truly pointless rule as when my children have politely asked them to call them by their nn the have replied, Sorry we have to call you by your full name. I really don't understand this, i arranged a meeting with one of the deputy heads but they refused to see me (i've never caused any problems, I'm the drop and pick up only type of parent) I don't see why they are just making the children uncomfortable!
AIBU????

You are repeatedly listing your enormous family's very unusual set of names on a highly used section of a website with thousands of active users and many more lurkers.

Are you insane? or is this a wind up?

There's no way I'd post my (meagre) collection of child's names on a site.
Are you on glue? That's so identifying - fame hungry?

Gosh 7 primary aged children - I thought I did well with four out of six at any one time. Assumedly several,of them are not new to the school? They can't all be in reception surely? Why have they only just objected to their given names? Have teachers suddenly changed how they refer to them?