People in this thread are up in arms about the principle, but the reason that they are being challenged is based on how they operate in practice.
Do all children have equal access? Nominally, maybe. But that’s de facto not the case.
But I feel it is very unfair, outright evil to take away an opportunity from gifted people (both from privileged families and a few from very bad families that would have been lifted up by said programs!! The aforementioned example could perhaps break the cycle and get a much much better life than any of his/her relatives) on the basis that the statistics on the enrolled will be biased. It is not the task of such a small-scale program to solve a huge, complex problem that probably can only be solved in decades if ever.