There is one problem with conclusions, they assume that interview score is the same as real world success of a candidate. It is not so, interview result correla

There is one problem with conclusions, they assume that interview score is the same as real world success of a candidate. It is not so, interview result correlates with future success but there is no strict determinism. So companies prefer students that successful in interview AND come from good school, rather than just rely on interview results. It allows them to maximize probablilty of the finding a good employee.