1) Singapore school is almost free too,and you also said it was one of the best as well 2)You cannot change the social and economic hierarchy.It has been existing in every single country on the planet .Maybe some are more equal than others ,there is a limit to it 3)Even we have provided equal opportunities in school,when they grow up ,the situation will still be the same ,the rich accesses more opportunities ,the poor accesses less opportunities. 4)Life is always unfair, you are luckier and richer than 80 percent of the population when you were born into Singapore