Back in those days intimidation was the greatest tool the drill instructor had. Without that tool, he would not have had control.
If you want to be a doctor, a lawyer you must go to college. But if you want to be a musician or such, study your craft. Study music.
At a moderate calculation, among a million of persons inhabiting the metropolis, there are, at least, twenty-five thousand children who attend these schools, and cost their parents as many pounds sterling, per annum.