It seems like the solution to this problem is to allow gifted kids to go at a faster pace starting in kindergarten. The problem with this idea is that it is pretty easy to get a gifted kid through elementary math by the time they are in fourth or fifth grade and sometimes much earlier.
All true.
Then the *real* problem becomes inadequate teacher preparation or institutional flexibility.
Math class always feels like the edge condition in educational policy to me. There is literally no end to content, and free university resources exist to extend learning beyond the confines of K-12. It is a matter of will and ideology, and the ideology is plain.
