Parent and child relationship has no limitations and starting points. How one parent carries the relationship with the child depends on the current requirements the relationship has. One cannot say to another parent how to go through with the relationship. Each parent and child relationship is unique from others because each child and parent differs from one another. There are otherwise some norms that are to be followed in order to put some status quo to the relationship just like other things and stuffs that everybody have to dealt with every day.
A child that fails in every subject he is currently enrolled with may have complications all on his own. One cannot say to the parent of that child that he is handling the child inaccurately unlike the way you dealt with yours. You cannot be a perfect parent compared to another one. Even one parent has to deal with each of his/her own child differently because each child is different from the other. If your own child always excel and is very outgoing don’t say to the parent of a very shy and slow learner child in your child’s class that he/she is not handling the relationship they have correctly. There may be some problems that the child has to deal with. You can instead encourage the child to interact naturally with others by being friendly. This may help the child move out of the protective shell he/she encased himself/herself with and will open her more to learning. You could contribute towards making the relationship better this way than the other way around.