IQ also fluctuates a lot, but yes, she is a lot like me (reads, thinks math/science is interesting, etc).

She bought only one prep book, for $35, with her own money. I guarantee the very poorest can get that one book, even from the library.

Parents absolutely influence children, otherwise what’s the point of parenting? This is a good thing. I’m just saying the $$ part is way overblown.