I think this is standard. Why would they give you ammunition to make more work for them? LOL!
There are places online where you can test her reading level. Personally, I did it by trial and error and now that dd is in 1st grade, she is selecting most of her own materials in the school library each week. Reading instruction at her school is done from self-selected titles. DD reads quietly to herself each day and reads aloud to her teacher on a weekly basis and also is tested for comprehension using Time for Kids with a sheet of questions afterward. It's an interesting change from the model they used when I was in school of reading aloud in groups and everyone being in the same reading textbook.