worst thing - worsen inequality and social stratifications. preferred placements for alumni at primary schools. kids who do well end up in the same school. end up all the more well off ones end up in the same school. LKY when he was around, raised this as a BIG issue. if the people just mix with same socio economic strata, how to understand difficulties of all others?
second worst thing - kiasu parents. arms race amongst parents. race to place kids in best tuition, best eca, massive investments to support kids' ecas.
best part - the average Singaporean can speak, write English better than the average American and British. same for maths and science.
second best part - a strong sense of pride and identity with our schools. helping to strengthen our sense of rootedness to Singapore. invaluable in a globalised world.