The following are mutually exclusive:

a) All children have equal opportunity.

b) Parents are able to spend money on their children.

I've spoken with many people who are in favor of both a) and b) and don't see the cognitive dissonance, but from this:

> like expensive tutoring aimed towards helping them pass exams, which is not available to many.

I guess you really favor a) over b). Unless your point was that exams should be selected to minimize the influence of last minute cram efforts which disproportionally benefit those with expensive tutors, in which case I might agree with you.