Yeah, you are right, as in order to do the job properly, the responsible parent should ensure that they select the correct curicullum. Many make the mistake of selecting the most popular curiculum, but then find it is not suitable for their child.
We can certainly take some lessons from the Japanese in determining a child's true potential and then cultivating the child into the correct direction.
That said, the parent should also be totally au fait with the curiculum.
A challenge, but not unbeatable.

This is only one part of the execution and of course there are other factors that are also prominent in quality education.

My sister in law has two educational degrees and I keep on instigating her to start her own pre-school, but she is just happy to teach her own two little ones. She can be so valuable to other working parents, but I am talking to a wall hahaha.