No, it is not illegal. Actually a lot of schools around the world use this as a method of punishment. In some schools there are not even janitors the kids have to clean the school themselves punishment or not.
On January 29, 1919, Congress ratified the 18th Amendment, which prohibited the manufacturing, transportation and sale of alcohol within the United States; it would go into effect the following January
The Twenty-first Amendment to the United States Constitution repealed the Eighteenth Amendment to the United States Constitution, which had mandated nationwide Prohibition on alcohol.
He returned Japan to imperial rule