There is something weird about our MOE.
After raising my kids, I arrived at one conclusion. MOE 留一手 for tuition centers to make money. It is a billion dollar industry.
It is almost impossible if you want your primary school kids to get A-star or AL1 in Maths and Science, without tuition. There is always challenging questions in PSLE that differentiate between those with and without tuitions. For English, if you don't attend writing classes outside school, you will never know how to structure and plan your essay. These are things that your school teachers wun teach you step-by-step.