We were so very, very spoiled when DS was 4. He was in a private preschool and by luck, his teacher had been an elementary teacher in Hong Kong. Because she wasn't certified here, she took a preschool job. Each day when the other kids were napping, she and my DS would work on real school. They did science experiments, read books together and both really loved the experience! I think this actually tainted our perspective- we fully believed all elementary teachers would be delighted to have him in class!

Perhaps you can ask her to just try the evaluation and see where it goes? I think most teachers don't go above because they don't want to upset parents, create a hothousing situation, mess with a kid's self-esteem or whatever other excuse they have.