A couple of friends had children in the Denver schools or went through them. It was hardest on the black achiever, as the other black kids spat on him and called him an Uncle Tom. The brilliant Jewish kid was beloved of his principal because he single-handedly helped out the school's standardized scores but did not have many of the generic high school friendships that are a support at the time and a pleasure to refresh in later life.
My kids went through Lakewood High, which has an IB program. They had fine, supportive teachers who gave extra help (calculus for my daughter, for instance). They had moral, humorous, supportive coaches for their jockery, a life aspect I could support but never furnish. They formed friendships that continue to this day, with people I consider ancillary kids (and some of whom I successfully instructed in [what I did not then know to call] mustachian techniques). They had jobs during school and summers, were accepted at state schools, did well, are firmly on the way to complying with the more important family financial rules: by 50 you must be able to retire, whether or not you choose to; and you must have at least one house that you would be willing to live in paid off.