I have worked in education for a few years as a private tutor and it has been my experience that parents who are obsessed with their children being 'perfect' often have deep emotional issues with feelings of inadequacy, low self esteem or even obsession.
They often focus on their children and do everything that they can to make them 'perfect' so that they can feel that although they themselves aren't without flaws, they made this perfect person and that is a point of pride for them.
This, however, often backfires.
When the kids show they aren't perfect, the parents often push them hard to excell, sabotaging their own children's ability to suceed and feel good about themselves. Nothing the child does is ever good enough for them. If they got a B on a hard test, they are often berated on why they didn't get an A instead. If they try out for a school play and got a supporting role, parents will ask 'why didn't you get the lead?'
The kids often end up feeling like a 'wind up toy' or 'performing animal' (their words, not mine) and quickly get sick of it. This leads to them feeling bad about themselves, because they feel that the people that are supposed to be proud of them and love them unconditionally, think that they don't measure up and those types of feelings can last a life time.
My advice: cut these kids some slack, let them be kids and love them for who they are. Because that ensures happiness for everyone involved.