Scorpius | Cassi
Even if the only ones disappearing were those who wished to go home, it wouldn't help. How would we know whether the government was sending them home, or simply removing inconvenient people by other means?
At home we thought that magical schools ought to be a safe haven away from the war, and that children should be protected from it. It's useful that you know the spells to protect yourself, though. Don't hesitate to use them if you should need to.