>Because the education is so poor, the only remediation is to hire unqualified people. So you end up with a deficient civil service in the name of fairness.

I think there's more solutions to that, no? The poor school might make more poor students, but statistically it probably also has some good ones too. So maybe given a basket of roughly equal candidates to a position, one can treat those with a diverse background as having a benefit, rather than looking at their school background and assuming they're unqualified or setting them aside.

If your candidates don't meet the bar then fine, but i'm not convinced that's the default case in life.