Basically this ^

Having a few friends as teachers in international schools, they have nothing good to say.

International school is like a placebo effect to some who believe that international school is the best place to be.

Probably the only good thing a student will gain is the connection with other wealthy kids and basically that's it.

The rest is up to parents upbringing and whether they spend time with their children. If a child is lazy, an international school will not transform that student into some superstar A student.

Examples of some real issues below:

There are also some 'ahbengs' in international school who stubbornly speak Mandarin everyday among their own cliques despite the 'English only' policy in school.

Another case was one particular student who complained to the HOD about having to write essays as homework. To please the student, the teacher was then called in the HOD room and the HOD instructed the teacher to stop giving essay as homework to the entire class.

Several students continuously coming late to school (guess who fetch them late? Their own parents and they don't even bother). The school called the parents to remind them not to fetch their kids late to school and yet they don't bother.

TBH, IGCSE is simpler than the current SPM syllibus

and the school didnt force the students to take the subjects, like our time at sekolah menengah,  if you in Sci class you need to take the whole package, if you have interest in Economics or Art class there is no way you can take the classes.

Did u go meet the teacher and demand the explanation over the matter?

I did met with the teacher several times due to some issues, and they was like... the attitude  .
that one incident that was the last straw-next day I came to the HM office and told them wanna transfer school and asked for surat berhenti sekolah and the whole files.

That is precisely what I mean. The problem is not because the standard of the SRJK© syllabus and content is low, it's actually quite high. The problem is the effectiveness in execution and the quality of the teachers.

If we took the same syllabus content and level of difficulty, and improved the following:
1. Textbooks and Activity Books
2. Teaching quality and effectiveness
would it change the picture?