Is there any commonly accepted reason for this? I would've thought it would have been the exact opposite, something along the lines of: As engineering graduate

Is there any commonly accepted reason for this? I would've thought it would have been the exact opposite, something along the lines of: As engineering graduates with more money and insider knowledge send their children to engineering schools, this large marketplace of private schools have to provide more value since the parents are now more likely to have the tools to spot value. I'm sure there'll still be lots of mediocre schools but wouldn't the better ones be getting very good very fast?