This American news clipping was published in November 1914. Quoting from a Department of Education circular, it says:

One of the most vital problems confronting school administrators at this time is the educational problem of how to teach about the current European war and the teacher’s attitude in the discussions in respect to this conflict.

Teachers should not express any personal opinions in regard to the war that will give a reason for resentment from the parents or offend the sensibilities of the children.

Below the fifth grade no time at all should be devoted to this war subject. Beginning with the fifth grade Current Events should be used in the class discussions and as a guide in the map study of the war zone.