Teacher's introduction of my dd - what does it mean?

[Mercedes]

My dd is in reception and has come home and said that her teacher introduced her to the new classroom assistant as being the oldest in the class and the one most like a year one girl.
I'm not sure how to take the comment most like a year one girl - attitude, speech, ability and whether it's a positive or negative thing.
I know my dd is only 5 but she's normally quite good at remembering and repeating things.
I'm not annoyed by the comment just puzzled. Any thoughts or views on how I should take it?

i would think it meant she is mature and reliable compared to the others...

.. definately a compliment and nothing to worry about...

I Would take it as a compliment, as it implies that your child behaves the same as a year 1 child.

I agree, it's without a doubt a compliment

how could it be negative?