I dont think a good education is just about maximising TER. A good education is about building skills and knowledge for life - whatever path your child chooses to take.
Thats correct. But a high TER has to be a reflection that something has gone right for the child - whether it be intelligence, good school, dedication, committment, peers with good values, hard work. A private school or better still, a top governement selective school provides a good environment where peers are more likely to be focussed on earning a high TER and possess the above mentioned attributes.