I agree that pre-algebra is an unnecessary step. In my school district you can test out of the class. If it's a good step for your daughter it's hard for me to tell. I don't remember does your DD goes to a private school or public school? Is Algebra already taught at her school? If she is already scheduled to take pre-Algebra at 9 yrs then the probably have an idea already that she is HG and it might just take talking to them about her best placement.