I think its the same case for much of the west. Here in the UK, I remember maths being not the greatest but certainly every kid got through with a passable level of competance.
Unless you have a very high budget, which usually only private (or public as they're called in the uk, but they're the same thing) schools have, you can't have it both ways where both the weakest students pass and the strongest students excel.
Unless you have a very high budget, which usually only private (or public as they're called in the uk, but they're the same thing) schools have, you can't have it both ways where both the weakest students pass and the strongest students excel.