true - but tracking very much exists in gov’t schools these days to those children fortunate to have interested parents. All sorts of magnet programs teach to decent standards. The tragedy is these magnet schools are the exception not the rule.
Trump’s approach to;
1) eliminate federal dept. of education
2) encourage massive expansion of non-Union charter schools
is great
Charters are all very well, but those alone wont do what Escalante did.
That takes the resources and population pool of a large school district. This is a system, not happenstance of having aware parents.
To see how its done, one has to go abroad.
Tracking (and it is done, officially and more usually, as in Escalantes case, unofficially) in the US is way too dependent on circumstance.