My husband teaches young girls at a madrasah.

Answer

It is haraam for him to teach even 5 year old girls. Haraam contact with young girls is a disease in which most teachers are involved. The result of haraam is always misery. Nowadays the rules of the Shariah are frowned on by even molvis and so-called aalimahs. Then later they regret when they become trapped in filth.

The best is for your husband to resign from the haraam job. If he continues teaching the girls, the nafs and shaitaan will entrap him in greater acts of evil. It is better that he finds any other job than teaching girls.