Senior Middle for Sri KL is about 40k or more a year.

St John still good ?

chinese independent - 50 people per class ? depend if ur kid can pass entrance exam.

sekolah cermerlang ? - this one good, but that doesn't avoid the occassional ridiculous education change of gomen would propose.

the cheapest around for senior middle is 40k a year and some range 50k-200k per year.

and we still got to save for their university education.

for nons, the possibility of not enter local university is very high depending the course you want to take up.
nons grades must be very gooding because entrance for nons is very narrow to local uni.

Let me lay out some realities for you:

If you think that just learning Chinese up to Standard 6 at SRJK© is going to equip you with sufficient proficiency in the language to be able to "have an advantage with foreign companies that invest in PRC", you are deluding yourself. While I do not deny that learning Chinese up to Standard 6 at SRJK© brings your ability in Chinese to a relatively good level, it is not enough for professional purposes. You will not even have sufficient vocabulary to make a boardroom presentation or engage clients, and you will find yourself code-switching with English and fumbling through Google Translate for every second or third word that you encounter. Would you say that "learning English until Standard 6 is sufficient to engage the English-speaking market and workforce"? If the answer is obviously "no", then why the double standards? I know people who have this same mindset - after their kids completed 6 years of SRJK©, off they went to international school. Guess what: Fast-forward 1-2 years later, and they could barely string a sentence together in Chinese. Even worse if the family does not speak Chinese at home.

If you want to learn Chinese to a usable level and retain it for life, then there are no two ways about it than to walk through the established systems: One is to continue learning it at government secondary school, preferably at an SMJK© where SPM Chinese is compulsory, or at an SMK that offers the subject (and even then the absolute minimum is to learn it to Form 3 before you decide you want to drop the subject), Otherwise, and even better, go to a Chinese Independent High School. Don't even start with me on international schools offering "Chinese elective classes in Year X or Year Y" - you will learn the same stuff that you learned in SRJK©, and you will retain nothing.

Yeah but imagine go back kampung flaunting kid going to international school end up in some arts course hippie ....neighbour kid study stpm end up becoming brain surgeon

Luxury yes.. but know when and who to flaunt to... Don't flaunt then malu sendiri.

private school is good ROI, if children go to singapore or overseas to work.