Duplicate names in nursery class

My dc have 2 of each of their names in their classes.

DD is eg: Sally C
DS is eg: Pete, abd his duplicate is Peter

(They also have one of each other in their classes. I grew up hating my unusual name, abd love that my dc are far from unusual).

My DS started reception in a small school with an intake of 10 and there was another boy with the same name. It’s a commonly shortened name and both boys were known by the short version but the reception teacher decided DS would be known as the long version to minimise confusion, which it probably did for everyone but him. He was stuck with it until he moved schools part way through KS2 where he insisted I put his shortened name on the paperwork.

My primary child is one of three. Everyone refers to him as first name surname. Really pisses me off! I think by secondary being a boy the surname nicknames will start.

My DS was one of 5 with the same Christian name in his class at secondary. They were all known by their surname.

My DD is one of three girls in her (small intake) school year with the same name. It’s not confusing but I’m a bit depressed in that after a term at school she signs herself as ‘Firstname C[laus]’ wherever she goes - even on family Christmas cards! I’ve spent an afternoon explaining to her she can sign herself just by her first name and people will know it’s her. It’s a bit weird and not something I thought of!

In my dc 1 class, they were known as different nn of name.

Eg Samuel, Sam and sammy

In dc 2, they used sirname initial.

Eg. Tom P, Tom D and Tom x. Actually, now in secondary school, those initials are still used.

My 3YO DS goes to nursery school. All 3 of the teachers (well teacher and 2 TA's) have the same name. He tells the difference between them physically. Unfortunately one has grey hair and glasses and he calls her an Owl. . So they do get it, even at a young age.

He has quite a common name, but I don't think there's another one in the same class. I do tend to put his initial or last name on things. He also likes to abbreviate his name, so that could be an option perhaps?

in a babyroom the others with the same name might not even be in on the same days as her.

My LG has three Freddies, two Lunas and two Isobels in her class. They just call them all by their first name, no differentiating. They may call them something else between the staff but in terms of them speaking to the kids it's just their first name.

Sorry, forgot to add. No one got mixed up or confused. They just got used to it.

In my daughter's class there was 2 Erins, 2 Islas and 2 Sophies. It was fine. They were known first name initial or first name and surname. Now she's at school there are no double names.