You can try your kid to bring to school. It is another kind of training lesson to her. If she is too young that cannot recognize their name at all then you can easy to mark their class number and let her to pass to her classmates.
Its work. We rec'd so many birthday invitation in the past and my kid also can pass her cards to the classmates.
If she is only K1, you can call to school and let the teacher to help to put into their schoolbag.